Recall in class the example of incorporating heavy or light nitrogen labels into DNA to investigate how DNA is replicated. Imagine if, instead of labeling DNA, the experiment used heavy labeled RNA bases. What would be the outcome if you examined the DNA strands after completion of DNA replication in the presence of heavy labeled RNA bases?

Answers

Answer 1

Answer: You would not notice any difference or any labeled base, because RNA is not used to make DNA.

Explanation:

DNA is a molecule that contains the genetic information in all living things. The molecule consists of two strands that wind around each other to form a double helix structure where the strands are joined by hydrogen bonds. It is a nucleotide polymer where each nucleotide consists of a sugar called deoxyribose, a nitrogenous base (which can be adenine, thymine, cytosine or guanine) and a phosphate group (derived from phosphoric acid). What distinguishes one polynucleotide from another, is the nitrogenous base and thus the sequence of DNA is specified by naming only the sequence of its bases. The sequential arrangement of these four bases along the chain is what encodes the genetic information.

Consider that DNA replication is semi-conservative, which means that each strand of the DNA double helix functions as a template for the synthesis of a new complementary strand.  This process leads from one starting molecule to two "daughter" molecules, in which each new double helix contains one new and one old strand. Then, if nitrogen tags are incorporated into the DNA, they will register on the old strand of the new DNA molecule.

On the other hand, RNA (ribonucleic acid) is a molecule similar to DNA but has only one strand and consists of a sugar (ribose) and alternating phosphate groups. Attached to each sugar is one of the four bases adenine, uracil, cytosine or guanine. The process of RNA synthesis, called transcription, consists of making a complementary copy of a piece of DNA. During this process, an enzyme called ARN polymerase, adds nucleotides that are complementary to the DNA strand. Then, this new RNA strand has new nucleotides. Thereby, if you examine the DNA strands after completion of DNA replication in the presence of heavy labeled RNA bases, you would not notice any difference or any labeled base, because RNA is not used to make DNA.


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What aspect of sexual reproduction best explains why it produces greater genetic variations in asexually reproducing organism

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Answer:

I think the answer is option 3

Explanation:

anyone know this I don’t get the question

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Answer: 5.000/ml

Explanation: density = mass/volume= 50/ 100=1/2 or 0.5 g/ mL

What percentage of the possible offspring will be hybrids?

Answers

Answer:

50 %

Explanation:

What basic substances make up a cell

Answers

Answer:

The main ingredient of cells is water. Water is needed to maintain homeostasis. Cells are also made up of macromolecules—nucleic acids, lipids, proteins, carbohydrates. These macromolecules help maintain a cell's structure, help cells communicate with each other, aid in energy storage, etc.

Answer:

Water

Explanation:

I WILL MARK U AS BRAINLIEST

Answers

Answer:

Ok but what exaclty is the question?

Explanation:

Answer:

welp...

Explanation:

im pretty sure its a :)

What is the relationship between UV radiation and melanin

Answers

UVA radiation causes lesions or DNA damage to melanocytes, which are the skin cells that produce the skin pigment known as melanin. Melanin is a protective pigment in skin, blocking UV radiation from damaging DNA and potentially causing skin cancer.

a heterozygous chicken with black feathers mates with a white chicken whats the possiblility the offspring will be black

Answers

Answer:

if black feathers are the recessive gene than there is a 0% of black feathers and if its dominate than there is a 100% chance of black feathers

Explanation:

     b     b

w   bw  bw

w   bw  bw

Which of the following can be explained as a mathematical formula
A. An observation
B. A Scientific theory
C. A Scientific Law
D. A hypothesis

Answers

Answer:

B

Explanation:

In a flock of birds, parents can raise small clutches on their own but can increase their clutch size if they have a helper. You want to see if altruistic behavior is likely to spread. To do this you observed a male bird that stayed at his birth nest for a year to help raise the offspring of his father and his stepmother (the original mother died) and then built his own nest the following year. You calculated direct fitness (cost) for the male bird by counting the number of offspring he produced in one year and multiplied it by ½ due to the relatedness between parents and offspring. To calculate his indirect fitness (benefit), you took the total number of offspring produced in his birth nest by his father and stepmother when he assisted them and multiplied it by ½. To determine if this altruistic behavior would spread you subtracted the cost from the benefit to determine whether it was greater than 1. What did you do wrong

Answers

Answer:

The mistakes made

Altruistic behavior is measured as ; b - c > 0  and not b - c > 1 relatedness for half siblings = 0.25 and not 1/2

Explanation:

The relatedness between ; Mother, father, daughter and son = 0.5 ( 1/2 )  which is included in the direct fitness category  ( For the MALE bird )

The relatedness for the Half brother and Half sister of the male bird = 0.25 ( 1/4 ) ( indirect fitness )

hence applying  Hamilton's rule

Relatedness = rb - c > 0

where b = benefit , c = cost

∴Total fitness = ∑ direct fitness + ∑ indirect fitness

                       = 0.5x + 0.25y

hence the mistakes made

Altruistic behavior is measured as ; b - c > 0  and not b - c > 1 relatedness for half siblings = 0.25 and not 1/2

Which experiment would BEST investigate the effect temperature has on the volume of a gas?

A.
Inflate one balloon to a large volume and another balloon to a small volume. Measure the temperature of the air released from both balloons.

B.
Stretch a balloon over the top of a beaker filled with baking soda and vinegar, then observe how the balloon changes volume as the reaction occurs.

C.
Measure the volume of a balloon filled with room temperature air; place the balloon in a freezer for an hour and measure its volume again.

D.
Measure the pressure of the air in a bicycle tire on a cold day.

Answers

Answer:

C.

Measure the volume of a balloon filled with room temperature air; place the balloon in a freezer for an hour and measure its volume again.

Hope this helps!

Measure the volume of a balloon filled with room temperature air; place the balloon in a freezer for an hour and measure its volume again would best investigate the effect temperature has on the volume of a gas. So, the correct option is C.

How volume effect the temperature of the gas?

The ideal gas law states that the temperature of a gas is directly proportional to its volume. Specifically, the temperature of a gas will increase if its volume is decreased while its volume and pressure remain unchanged. If the volume of a gas is increased, its temperature will fall but its volume and pressure will remain unchanged.

This relationship can be explained by the fact that when a gas is compressed (that is, its volume decreases), the molecules are confined to a smaller area and move more away from each other and the walls of the container. Bars collide. Due to the increasing frequency of impacts, there is also an increase in kinetic energy, which increases the temperature.

So, the correct option is C.

Learn more about Volume, here:

https://brainly.com/question/29269026

#SPJ2

74. As layer upon layer of sediments are deposited, the process of the presses them
together.

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Answer:

GO GET BOY

Explanation:

Importance of photosynthesis to humans

Answers

Green plants and trees use photosynthesis to make food from sunlight, carbon dioxide and water in the atmosphere: It is their primary source of energy. The importance of photosynthesis in our life is the oxygen it produces. Without photosynthesis there would be little to no oxygen on the planet.

Answer: Green plants and trees use photosynthesis to make food from sunlight, carbon dioxide and water in the atmosphere: It is their primary source of energy. The importance of photosynthesis in our life is the oxygen it produces. Without photosynthesis there would be little to no oxygen on the planet.

Explanation:

Hemophilia is
A. an autosomal dominant inherritated disorder
B. an autosomal recessive inherited disorder
C. an Y- linked recessive disorder
D. an X- linked recessive inherited disorder ​

Answers

the answer is C jsjsjs

help i don’t know the answer

Answers

Answer:

I'm pretty sure it is the first option.

g Sickle-cell anemia arises from a mutation in the gene for the beta chain of human hemoglobin. The change from a GAG to a GTG in the mutant eliminates a cleavage site for the restriction enzyme MstII, which recognizes the target sequence CCTGAGG. These findings form the basis of a diagnostic test for

Answers

Answer:

The sickle-cell gene.

Explanation:

The sickle cell mutation is in the gene encoding the β subunit. The sickle cell gene is located on the short arm (p) of chromosome 11, at position 15.5. Sickle cell anemia is a genopathy caused by a single mutation that results in the substitution of an amino acid in the β chains of the tetrameric protein hemoglobin. It characterized by the presence of sickle cells in the bloodstream, which are red cells or sickle-shaped erythrocytes. This form causes difficulty in the circulation of red blood cells. Confirmation of sickle cell anemia is obtained through tests that determine the presence and relative amount of hemoglobin S in a blood sample, that is, by checking the phenomenon of sickle cell disease, in a drop of blood between the slide and covers objects, or the presence of hemoglobin S by means of electrophoresis.

1. After you remove the water, all lite is made up mostly of carbon?

Answers

Answer:

There are other elements that are fundamental to life.

Explanation:

Carbon is fundamental to life although water is also important to life. You could argue that all life would be made mostly of carbon if you remove all the water though.

HELP. This is due in a bit. Giving Brainliest!!

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a) Tall
B)tall
C)short
D)purple flour
E)purple Flour
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Answers

Answer:

a. savoury...........

Option A) savoriness, brothy, meaty

Please select the word from the list that best fits the definition

Grouping items together to keep observations organized


inferring


predicting


classifying


observing

Answers

Answer:

classifying

Explanation:

for example like classifying the files from SVU classifying them keeps them more organized and labeled kind of like identifying them classifying them keeps them all together in one group

Which step occurs in meiosis to prepare for fertilization in sexually
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Answers

Answer: 12 sexual reproduction and meiosis concept outline

Explanation: The process of meiosis produces unique reproductive cells called gametes, which have half the number of chromosomes as the parent cell. Fertilization, the fusion of haploid gametes from two individuals, restores the diploid condition. Thus, sexually-reproducing organisms alternate between haploid and diploid stages.

Hope this helps :D

This category of endangerment occurs when organisms are still abundant in its natural range, but declining in numbers:

A. Endangered species
B. Threatened species
C. Invasive species
D. Endemic species
E. Red list species

Answers

The answer to the question is B

Plz help me well mark brainliest if you are correct!

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Pretty sure it’s A but don’t wanna get it wrong for you

haploid daughter cells form

Answers

Answer:

ok

Explanation:

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cells.
Hope this helps you!

Which number label represents the nucleus? 6 5 3 2

Answers

Answer:

The nucleus would be #6

Explanation:

Answer:

Its 6

Explanation:

6 is the nucleus, 5 is the nucleolus

The levels of organization in living things are cell, tissue, organ,
and organs-system. What level of organization is each layer - the
epidermis, palisade layer, spongy layer? __ . The entire
leaf would then be considered to be a__.


HELP PLEASE!!!

Answers

Answer:

An ion with a -2 charge, atomic number 17, an atomic mass of 25 has how many electrons?

Explanation:

Which of the following is a 5-carbon sugar?
Glucose
Fructose
Ribose
Sucrose​

Answers

Answer:

ribose

Explanation:

Answer:

Ribose & deoxyribose sugars. Ribose is a single-ring pentose [5-Carbon] sugar.

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A. repeat the experiment
B. write a report to present to her science class
C. ask another question about the behavior of earthworms
D. count the number of earthworms that are present on each side of the box

Answers

Answer:

A is the answer because she have to answer again to make sure it is right

Biology please help me

Answers

1) b

2) c

3) d

4) c

5) b

6) a

7) b

8) a

9) a

10)c

Answer:

1. b 2.c 3.d 4.c 5.b 6.a 7.b 8.c 9.a 10.c

Explanation:

not the most certain on 9 and 10 sorrym

How might the production of antibiotics and odours have evolved?​

Answers

Answer:

Antibiotic resistance evolves naturally via natural selection through random mutation, but it could also be engineered by applying an evolutionary stress on a population. Once such a gene is generated, bacteria can then transfer the genetic information in a horizontal fashion (between individuals) by plasmid exchange

The diagram illustrates the foraging distribution of three different species of waterfowl in a pond and surrounding wetland areas.
Which statement accurately explains the phenomenon shown in the illustration?

Answers

Answer: C) Each species evolved a unique foraging area as a natural result of competition.

Explanation: i just took the test

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