1) How is nondisjunction related to Down syndrome and other abnormal chromosome numbers?

2) State the differences between DNA and RNA

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Answers

Answer 1
1. Down syndrome is usually caused by an error in cell division called “nondisjunction.” Nondisjunction results in an embryo with three copies of chromosome 21 instead of the usual two. Prior to or at conception, a pair of 21st chromosomes in either the sperm or the egg fails to separate.


2. DNA contains the sugar deoxyribose, while RNA contains the sugar ribose.


DNA is a double-stranded molecule, while RNA is a single-stranded molecule.

Choose either one ^^^

Hope this helps you.

Related Questions

What are some agents of mutation that can affect the genes of humans? (Choose all that apply)
failure of repair by ligase

codon errors

poor nutrition

ionizing radiation

Answers

Answer: The correct answers are "ionizing radiation", "codon errors" and "failure of repair by ligase"

Explanation:

I took the test

Some agents of mutation that can affect the genes of humans are ionizing radiation and codon errors as well as failure of repair by ligase.

What is genetics?

Genetics has been known as the study of the heredity as well as the variation of the inherited the characters and the genetic properties and the organism's feature and the characteristics. It has been also known as the branch of biology that has to deal with the study of genetic variation, genes, and the heredity in the organisms.

The main function of the DNA has to carry the information from one generation to the another generation this has been the reason due to which DNA has been also known information molecule.

The main function of mRNA has to work as the immedieter between the protein and DNA which has been utilised by ribosome for the process of direct synthesis of protein, and the function of tRNA has to carry the accurate amino acid to the proteins synthesis site which takes place in ribosome.

Therefore, Some agents of mutation that can affect the genes of humans are ionizing radiation and codon errors as well as failure of repair by ligase.

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Why do modern scientists use repeated
experiments to develop and test hypotheses?
Repeated experiments that show the same
results prove that scientific information will
never change
Repeated experiments that show the same
results are less likely to contain experimental
errors.
Repeated experiments that show the same
results guarantee that all scientists will agree
with the experimenter's explanations

Answers

Answer:

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Answer:

Repeated experiments that show the same results are less likely to contain experimental errors.

Explanation:

1. ATP-ADP cycle talks about energy and has two types; potential energy and kinetic energy. The energy in motion is?

A. Both potential and kinetic energy C. Kinetic energy only

B. Potential Energy only D. none of the choices

2. This is the capacity to do work.

A. Potential Energy C. Chemical Energy

B. Energy D. all of the above

3. What is the product of photosynthesis?

A. Glucose C. Glucose and carbon dioxide

B. Oxygen D. Glucose and oxygen

4. Mitochondria : cellular respiration : : chloroplast : ___________

A. Calvin cycle C. Krebs cycle

B. Chemiosmosis D. photosynthesis

5. From where are heterotrophs directly obtain its energy?

A. the sun C. eating other organisms

B. the sun and eating other organisms D. simple chemicals in the environment

6. NADH & FADH : cellular respiration : : NADPH : ___________

A. phosphorylation C. glycolysis

B. redox reaction D. photosynthesis

7. Light-dependent reaction : energy formation : : Calvin cyle : __________

A. stroma C. ATP synthesis

B. Krebs cycle D. glucose synthesis

8. In the light dependent reaction, what is the first role of the captured energy from photon?

A. to split a water molecule C. to synthesize glucose

B. to energize the electrons D. to produce ATP

9. Plants produce oxygen as a by-product when they photosynthesize. Where is the oxygen come from?

A. from the electron transport chain C. during ATP synthesis

B. by splitting water molecules D. by the chlorophyll

10. Where in the plant cell Calvin cycle take place?

A. thylakoid membrane C. granum

B. thylakoid space D. stroma

11. Which statement correctly describe carbon fixation?

A. the production of carbohydrate molecules from G3P C. the formation of RuBP from G3P molecules

B. the conversion of CO2 to an organic compound D. the use of RUBISCO to form 3-PGA​

Answers

1. A
2 D
3. C
4. B
5. B
6. C
7. B
8. D
9. D
10. A
11. C
Hope that helped sorry if wrong

Which types of plant cells must receive glucose from other plant cells?

Answers

Answer:

While plant cells have chloroplasts to photosynthesize, they also require ATP for cellular functions, and do use oxygen to break down some of the sugar they produce in order to generate that ATP. They need mitochondria for this.

In particular, at night when there is no light, plants undergo cellular respiration since there is no sunlight to photosynthesize.

They do, however, produce far more sugar and oxygen through photosynthesis than they use up in respiration.

The type of plant cells that receives glucose from other plant cells are NON-PHOTOSYNTHETIC plant cells.

Photosynthesis is a group of metabolic reactions by which plant cells generate simple carbohydrates (i.e., glucose) and oxygen by using the energy from the sun, carbon dioxide and water.

In consequence, non-photosynthetic cells cannot produce glucose and thus need to receive this nutrient from photosynthetic cells.

An example of non-photosynthetic cells is the root cells found underground.

In conclusion, the type of plant cells that receives glucose from other plant cells are NON-PHOTOSYNTHETIC plant cells.

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Explain how each type of infectious agent (bacteria, virus, fungi, and parasite) affects the body.

Answers

There are five major types of infectious agents: bacteria, viruses, fungi, protozoa, and helminths. In addition, a new class of infectious agents, the prions, has recently been recognized

Answer:

bacteria-Some bacteria help to digest food, destroy disease-causing cells, and give the body needed vitamins. Bacteria are also used in making healthy foods like yogurt and cheese. But infectious bacteria can make you ill. They reproduce quickly in your body.

Virus-A virus infects your body by entering healthy cells. There, the invader makes copies of itself and multiplies throughout your body. The new coronavirus latches its spiky surface proteins to receptors on healthy cells, especially those in your lungs.

fungi-When fungal organisms enter the body and the immune system is compromised these fungi grow, spread and invade into tissue and spread locally. Some organisms, especially yeast and some molds, can invade the blood vessels and cause infection in the bloodstream and distant organs.

Parasite-When the worms live in the body they can cause sickness. They may get into the stomach and gut and eat the food before the body has digested it. This means that the body does not get enough nourishment. Sometimes the worms will find their way into other parts of the body, such as the blood or liver.

Difference between eukaryotic cells and prokaryotic cells.​

Answers

I hope this helps you

........

Answer:

eukaryotic cells are those which have a membrane-bound nucleus that contains genetic material, as well as organelles that are also membrane-bound. Whereas, prokaryotes are cells that don’t have a nucleus or membrane-encased organelles.

Explanation:

hope it will help you !

5' GTA___ A A 3'
3' CATGCATT 5'
This segment of DNA has undergone a
mutation in which three nucleotides have
been deleted. A repair enzyme would replace
them with
A CGT.
B GCA.
C CTG
D GTA.


I’ll give you the brainliest if you answer with an explanation.

Answers

A. CGT

Explain- C pairs with G and A pairs with T. Vise verse.

The correct answer is A CGT. As repair enzyme would replace them with CGT.

The practical section of DNA is known as genes. Gene is the section of DNA that codes for a practical protein. Genes are inherited from mother and father to offspring. They convey genetic statistics from one technology to another.

What are the 4 bases of DNA?

CGT is an acronym for the 4 forms of bases located in a DNA molecule: adenine (A), cytosine (C), guanine (G), and thymine (T). A DNA molecule includes strands wound around every other, with every strand held collectively through bonds among the bases. Adenine pairs with thymine, and cytosine pairs with guanine.

Hence concluded that CGT is a segment of DNA that has undergone a

mutation in which three nucleotides have been deleted.

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What describes the conversion of ADP to ATP?

Answers

Answer:

ATP stands for adenosine triphosphate, where three phosphoric acids attach themselves to provide high energy phosphate groups to it. This process of conversion of ADP to ATP is called as phosphorylation.

Explanation:

Realiza un esquema de la clasificación de los nutrientes, y enliste los alimentos en los que consten características, dónde se encuentran y función

Answers

Answer:

Carbohydrates

Protein

Fat

Vitamin

Minerals

and Water

Explanation:

Carbohydrates

Carbohydrates are energy giving foods, sources are Honey, maize, rice and sweet fruits.

Protein

Protein is required for the growth, sources are meat, egg, fish, cheese and milk.

Fat

Fat is concentrated source of energy, sources are sesame and sunflower oils.

Vitamin

Vitamin is body building, sources are fruits.

Minerals

Minerals are also a kind a vitamin which is important for different functions of the body, sources are sodium, fluorine and potassium.

Water

Water is for hydration of the body, source is water

will mark brainliest please help me

What is the difference between “expressing” and “repressing” and gene?

Answers

repressing is a gene and pressing is a gene but both can repress and press

What happens during S phase?

Answers

Answer:

DNA is replicated

which statement best explains how cellular respiration helps maintain homeostasis in animals

Answers

Answer:

It maintains body temperature by absorbing energy

Explanation:

I hope it will help ☺️☺️

How are government agencies like the local health department working to keep the public safe from the problem of HAB's?

Answers

Answer:

The local health departments work together with local water suppliers and act to monitor harmful algal blooms (HABs)

Explanation:

Harmful algal blooms (HABs) are produced by blooms of algae (phytoplankton), some of them may produce toxins that lead to illness/death in humans and marine organisms (e.g., marine mammals, fish, seabirds, etc). HABs represent a real concern for coastal areas. Cyanobacteria, also known as blue-green algae, may produce HABs both in fresh water and in marine water. Some of the most common causes that may lead to a HAB include the runoff of nutrients (especially those rich in nitrogen and phosphorus), high temperatures, a slow movement of water bodies, etc. The local health departments work to monitor these phenomena by collecting samples in order to analyze the state of the water (i.e., by identifying the presence of toxins, especially cyanotoxins) and give advice to local residents. For these purposes, it is generally required to analyze phytoplankton composition, especially the presence of accessory pigments to chlorophyll a (since these pigments represent good indicators for possible HABs).

What method do scientists use to trace plant and animal extinctions through Earth's history

Answers

Answer:

Paleontology is the study of the history of life on Earth as based on fossils. Fossils are the remains of plants, animals, fungi, bacteria, and single-celled living things that have been replaced by rock material or impressions of organisms preserved in rock.

Explanation:

Because there are very few ways of directly estimating extinction rates, scientists and conservationists have used an indirect method called a “species-area relationship.” This method starts with the number of species found in a given area and then estimates how the number of species grows as the area expands.
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differentiate between thallophyta bryophyta and tracheophyta​

Answers

Answer:

The main difference between Thallophyta Bryophyta and Pteridophyta is the organization of each phylum. Thallphyta consists of algae, fungi, lichens, and cyanobacteria. The plant body of Thallophyta is a thallus. ... The plant body of bryophytes is not differentiated into true stem, roots, and leaves.

Explanation:

using the count data and observational data you acquired calculate the number of cfus in the original sample

Answers

Answer:

cuales son los datos ?

Explanation:

cuales son los datos

7. A man sitting outside a restaurant on a park bench is smoking a cigarette while reading a newspaper. Which answer best describes the mutagen to which the man is exposed?
O The newspaper
The cigarette
The oxygen he is breathing
The park bench​

Answers

the cigarette, tobacco is a mutagen because of the affect

How can you use what you know about chemical reactions to explain what happens to food molecules when you eat?

Answers

Answer:

Chemical digestion involves the secretions of enzymes throughout your digestive tract. These enzymes break the chemical bonds that hold food particles together. This allows food to be broken down into small, digestible parts.

Explanation:

______ is the transfer of energy through spaces as electromagnetic waves in all directions?

A. Conduction
B. Radiation
C. Fission
D. Convection

Answers

Answer:

electromagnetic radiation Transfer of energy by electromagnetic waves across space or through matter.

Answer:

radiation

Explanation:

Farmers have cultivated five different vegetable crops by artificially selecting for certain traits from the wild mustard plant. This table lists information about five different vegetables that originated from the wild mustard plant.


Broccoli- Suppression of flower development


Cabbage- Suppression of internode length


Kale- Enlargement of leaves


Cauliflower- Sterility of flowers


Kohlrabi- Enhancement of lateral meristems


Which statement is correct about the development of these vegetables through artificial selection?


A.
They resulted from a characteristic of the mustard plant that was changed or enhanced by the selective cultivation.

B.
They resulted from the exposure to extreme temperatures and ultraviolet sun rays.

C.
They were created over one generation when crossbreeding took place between two different varieties of vegetables.

D.
They stopped forming additional varieties at the end of a growth cycle.

Answers

Answer:

A

Explanation:

because the farmers selected certain traits to propagate

Why do cells continue to divide in adult organisms?

Answers

Although most of the tissues in adult organisms maintain a constant size, the cells that make up these tissues are constantly turning over. Therefore, in order for a particular tissue to stay the same size, its rates of cell death and cell division must remain in balance.

Answer:

Although most of the tissues in adult organisms maintain a constant size, the cells that make up these tissues are constantly turning over. Therefore, in order for a particular tissue to stay the same size, its rates of cell death and cell division must remain in balance.

Explanation:

There are two main reasons why cells divide rather than continuing to grow larger and larger: The larger a cell becomes the more demands the cell places on its DNA. If the cell grows too large, it will have trouble moving enough nutrients and wastes across the cell membrane. Why does cell division remain important to an adult organism even after it is fully developed? It remains important because cells are renewed and wounds are healed in the process. When cells stop dividing to specialize in structure and function. When cells undergo programmed cell death.

2. Which hormone stimulates the removal of sugar from the blood?
a. Glucose
b. Insulin
c. Glycogen
d. Glucagon

Answers

Answer:

Glucagon

Explanation:

Glucagon works along with the hormone insulin to control blood sugar levels and keep them within set levels. Glucagon is released to stop blood sugar levels dropping too low (hypoglycaemia), while insulin is released to stop blood sugar levels rising too high (hyperglycaemia).

PICK ONE ONLY FOR EACH ONE
1) harry potter, maze runner, divergent
2) blue, black, purple
3) Football , Basketball, soccer
4) pizza , tacos , soup

Answers

Answer:

divergent, black, football, tacos

Explanation:

Project: Earths layers

Answers

Answer:

here hope helps

Explanation:

Explain how potential energy and kinetic energy change as a roller coaster around the track

Answers

Answer:

beacuse of the ups and downs

Explanation:

Answer:

up, down

Explanation:

All geologic eras are about the same number of years.
True or false

Answers

Answer:

false

Explanation:

Does anyone know how to do these 2?

Answers

Answer:

use this

Explanation:

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A cell contains the structure shown below that contains chlorophyll and is the site of photosynthesis. What
other cell structure that is not found in all eukaryotic cells, is likely to be found in this cell?

A. Mitochondria
B. Cell Membrane
C. Cell wall
D. Cytoplasm

Answers

The answer would be cytoplasm

The cell wall is found in plant cells but is absent in animal cells. Therefore, option C is correct.

What is a cell wall?

Cell walls are a specific type of extracellular matrix that covers every plant cell. Many of the traits that set plant cells apart from animal cells are caused by the cell wall.

Plant cells have a cell wall that surrounds their plasma membrane and offers tensile strength as well as defense against osmotic and mechanical stress. Additionally, it enables the development of turgor pressure or the pressure of the contents of the cell against the cell wall.

The pectin polysaccharide matrix, which is highly cross-linked, contains a matrix of cellulose microfibrils and cross-linking glycans that make up the cell wall. Lignin may accumulate in secondary cell walls. Therefore, option C is correct.

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The predominant plants found in the savanna are grasses, and there are only a few isolated or small clusters of trees. Which abiotic factor helps to maintain the savanna as a grassland rather than a forest?
A Loose Soil
B Abundant rainfall
C warm temperatures
D lightning Fires
PLEASE HELP

Answers

A if I am correct ...…...................

Loose soil is the abiotic factor which helps to maintain the savanna as a grassland rather than a forest. Thus, the correct option is A.

What are abiotic factors?

Abiotic factors are those components of the ecosystem which are non-living. Abiotic factors include soil, temperature, rainfall, fire, etc.

Savanna is a biome which contain predominantly grasses with a few isolated or small clusters of trees in the ecosystem. The loose soil in this biome is mainly responsible for maintaining savanna as a grassland rather than a typical forest.

Loose soil is an abiotic factor which is responsible for the forestation of an ecosystem. It is difficult for the big trees to hold the loose soil whereas the grass have their perennating organs protected below the surface of the soil. Thus, they are favored in the savanna biome.

Therefore, the correct option is A.

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Put "Evolution of Populations" in a sentence

Answers

Answer:

animals are examples of evolution of population

Explanation:

Other Questions
If corresponding angles are on parallel lines, then their measure is the same _____.alwaysneversometimes Mr. Johnson sells erasers for $3 each. He sold 96 erasers last week and he sold 204 erasers this week 3. Explain the role of organisms in the carboncycle and oxygen cycle Amy and Brian were investigating the acquisition of a tax accounting business, Bottom Line Inc. (BLI). As part of their discussions with the sole shareholder of the corporation, Ernesto Young, they examined the company's tax accounting balance sheet. The relevant information is summarized as follows: FMV Adjusted Basis Appreciation Cash $32,250 $32,250 Receivables 18,600 18,600 Building 136,000 68,000 68,000 Land 269,250 89,750 179,500 Total $456,100 $208,600 $247,500 Payables $27,200 $27,200 Mortgage* 135,750 135,750 Total $162,950 $162,950 Ernesto was asking for $408,000 for the company. His tax basis in the BLI stock was $150,000. Included in the sales price was an unrecognized customer list valued at $150,000. The unallocated portion of the purchase price ($68,000) will be recorded as goodwill. Required:a. What amount of gain or loss does BLI recognize if the transaction is structured as a direct asset sale to Amy and Brian? What amount of corporate level tax does BLI pay as a result of the transaction, assuming a tax rate of 34 percent?b. What amount of gain or loss does Ernesto recognize if the transaction is structured as a direct asset sale to Amy and Brian, and BLI distributes the after-tax proceeds (computed in question a) to Ernesto in liquidation of his stock?c. What is the nature of tax benefits to Amy and Brian as a result of structuring the acquisition as a direct asset purchase?d. What is the tax basis in the assets received by Amy and Brian? HELP ME PLSwhen your sence becomes sharper what is thata.respitory systemb.circulatery systemc.nervouse systemd.muskeler and skeletal system If the probability of an event isand there are 28 total outcomes, how many favorable outcomes are there?0 10407O 28PLEASE ANSWER AND HURRRRRRY sentence. (5marks)1) The president or the vice president (is, are) speaking today2) Our swimming club care is) going to compete in November3) The police (hasn't, haven't) released any information about the terrorist4) Both of you (know, knows) the rules.5) Several of my teeth (has, have) cavities. Are 0.34 and 3/4 equivalent? Please explain your answer In complete sentences. The Monroe Doctrine: a. was the idea that all white men should have voting rights. b. declared the Americas off-limits for further European colonization. c. stated that the United States would be neutral in all international conflicts. d. settled the nullification crisis favorably for South Carolina. e. secured Florida from Spain. If sperm and egg cells have half of the number of chromosomes found in other body cells, how do gametes form? .Now, match the words on the left with the words on the right to make commoncollocations.AB1. attractive2. sensational3. unfortunate4. sincere5. spectacular6. thorougha. displayb. offerc. investigationd. incidente. apologiesf. news Before work can begin on the project, the customer must Group of answer choices sign a contract with the contractor that includes the project start date and payment plan. assess the risks for completing the project on time and reduce the award amount if there is any risk. announce who won the bid for the project so the work can start immediately. contact the contractor and say the project is the winner so the work can start immediately. is it possible to have triangle with 3 cm 6 cm and 7 cm sides if yes then Find the length of AD if AB = 24, DE = 8, and DC = 12. a.8b.12c.14d.10HELP PLS I need help with this plz Mr. Griggs took his two daughters to the movies to see Frozen 2. He paid 19 dollars in all for the tickets. An adult ticket costs 9 dollars. Write and solve an equation to find how much each child ticket cost. What is the solution of the system of equations?y=x+2y = 3xF. (3,-1) G.(-3, 1) H. (1,3)I. (1, -3) how do i say yes in russian A tree casts a shadow that is 9 feet long. The distance from the top of the tree to the end of the shadow is 15 feet. What is the height of the tree? The street signs in a subdivision are in the shape ofcircles. Each street sign has an area of 452.16 squareinches. What is the approximate circumference of eachsign? Use 3.14 for .F 38G 72H 75J 144