Answer:A
Explanation:
Under genetic drift effects, the allelic and genotypic frequencies of a population change through generations. In the exposed example, the frequency of the white allele in the same population at the same time is f(b) = 22%.
-------------------------
Available data:
Frequency of the dominant allele, B = 78% = 0.78 Frequency of the recessive allele, b = ??Genetic drift lab simulation ⇒ Founder effectWe need to find out the frequency of the recessive allele is this new population. But before answering the question, let us review what the genetic drift is.
Genetic drift is an evolutionary mechanism. Genetic drift is the random change that occurs in the allelic frequency of a population through generations. The magnitude of this change is inversely related to the size of the original population. Its effects are harder in a small-sized population. These changes produced by genetic drift accumulate in time. Eventually, some alleles get lost, while some others might set. Genetic drift affects a population and reduces its size dramatically due to a disaster or pressure -bottleneck effect- or because of a population split -founder effect-.When the small population increases in size, it will have a genetically different composition from the original one. Genetic variability is reduced, and there exists the possibility of developing a peculiar allelic composition.
According to this information, we know that allelic frequencies vary from generation to generation. So probably, if we need to calculate allelic and genotypic frequencies in the next generation, they will be different from the frequencies in this generation.
However, in this problem, we need to determine the frequency of the recessive allele at the same time, meaning in the present generation.
Since they are frequencies, their addition must equal one. So all we need to do is to clear the following equation,
p + q = 1
being
p the dominant allele frequency, f(B) = 0.78q the recessive allele frequency, f(b) = ??0.78 + q = 1
q = 1 - 0.78
q = 0.22 = 22%
The frequency of the white allele in the same population at the same time is f(b) = 22%.
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5. What energy source provides the heat to form the "ingredients" of Sedimentary rock?
Answer:
Internal Heat of the Earth and the Energy of the Sun.
all of the following statements support the cell theory except-
Answer:
L
Explanation:
If a woman of blood type A has a child of blood type O, which of the following could be the father's blood type?
A. blood type A, AB, or O, but not B
B. blood type O, only
C. blood type A or B, only
D. blood type A, B, or O, but not AB
Answer:
A blood type A
Explanation:
What are the main differences between asexual reproduction and sexual reproduction?
1. Asexual reproduction requires two parents and produces non-identical offspring, while sexual reproduction requires only one parent and produces identical offspring.
2. Asexual reproduction requires two parents and produces identical offspring, while sexual reproduction requires only one parent and produces non-identical offspring.
3. Asexual reproduction requires only one parent and produces identical offspring, while sexual reproduction requires two parents and produces non-identical offspring.
4. Asexual reproduction requires only one parent and produces non-identical offspring, while sexual reproduction requires two parents and produces identical offspring.
Answer:
3. Asexual reproduction requires only one parent and produces identical offspring, while sexual reproduction requires two parents and produces non-identical offspring.
Explanation:
Asexual - one parent only. Offsprings looks identical
You could see that in plants and flowers where each offspring looks the same
Sexual - two parents. Offsprings do not look identical
Ex : Animals and humans. We need a male and a female/ egg + sperm. The offsprings produced are non identical as genes from both parents are included
Answer:
3
Explanation:
asexual requires only one parent (think Jurrasic park lost worlds with the girl and the velociraptor they both are products of asexual reproduction)
sexual requires two parents to make the baby
Stating the consequences of drug use is a resistance strategy that can involve __________. A. explaining why the drug is harmful for you B. explaining possible negative side effects of the drug C. explaining how your life might negatively change if you began taking the drug D. all of the above Please select the best answer from the choices provided. A B C D Mark this and return
Answer:
D. all of the above
Explanation:
It is all of them. When we are explaining to someone the consequences of taking a certain drug we can start by explaining to them why the drug in question is harmful to them. Will it ruin their body, their health or others. The drug may have some negative effects that we also need to explain. Telling them how it will ruin their life or their family if they start to take the drug.
Answer friends , pls
PLEASE HELP ME WITH THIS AND HURRY WILL MARK AS BRANLIEST!!!!!! Why do leaves change color in the fall? Research this phenomenon and write a two-page report describing what happens. Be sure to include an introduction and a conclusion to your report. Use the information you have learned in this lesson about chlorophyll, the green plant pigment, and its role in photosynthesis to help you explain what happens in the fall.
Answer:
Leaves are always the color they turn in the fall
Explanation:
The chlorophyll created when the leaves use sunlight to create energy for the tree has a green pigment that covers the leaves actual colors. As the leaves separate from the trees they stop making chlorophyll, thus allowing the leaves true colors to return.
I hope this helps and good luck on that two-pager!
Answer:
During the fall the day gets shorter hence less sunlight this results to leaves stopping their food making process. The chlorophyll breaks down, the green color disappears and the yellow to orange color becomes visible
Explanation:
An advantage of using cell models when studying cells is that the cell models-
Answer:
The answer is H
Explanation:
The correct answer is that the cell model E. show cell shape and tiny organelles found in the cell that helps in the identification of the cell and their organelles.
Cell models are models that represent biological cells as discrete entities. These models help in representing the cell shape and components of the cells.
These are used in various biological fields such as computational biology, cellular biology and are also used in studying the cell and comparing them to identify the cell and its organelles.
By the shape and its tiny organelles, one can identify and find the cell, as prokaryotic cells lack various cell organelles, similarly, animal cells and plant cells have distinct shapes, and some cell organelles.
Thus, the correct answer is option E. show cell shape and tiny organelles found in the cell
Learn more about cell models:
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Organelles listed here can all be found in an animal cell except ___. chloroplast ribosome lysosome vacuole
Answer:
chloroplasts
Explanation:
why is sustainability a problem in agriculture crops ?
During cellular respiration, cells convert the energy stored in glucose to make the energy molecule ATP, as shown in the equation. Less than 40% of the energy found in glucose is actually converted into ATP. What happens to the other 60% of this energy
Answer:
the other 60% of energy is stored away for further use in the cell
Explanation:
i hope im right
In the cell from glucose, 40% of energy is utilised to make ATP and the rest 60% is used in the process of making ATP. So 100% of glucose cannot be converted into ATP.
How does ATP form from glucose?Glucose is a major source of energy. It has carbon, oxygen, and hydrogen . Due to the presence of oxygen, it can easily break down to produce energy during times of need.
Glucose is broken down into pyruvate by the process of glycolysis. In this process, the net gain is 2 ATP. Pyruvate converts into acetyl CoA. ATP is required in this process. Acetyl CoA enters the Krebs cycle.
To enter the mitochondria, ATP is required. Acetyl CoA enters the krebs cycle and electron transport chain. The FADH₂ , NADH are broken. Proton gradient is formed due to the electron movement. Then ATP is formed due to the proton gradient across the inner mitochondrial membrane . To make ATP a lots of ATP have used in the process. So net gain of ATP of a glucose is 40% as rest 60% has used in the process .
Hence, 40% of energy of glucose make ATP, and the rest 60% is used in the process of making ATP.
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Which of the following is a NOT a true statement about fertilizers?
Organic fertilizers have increased crop yields during the last 100 years, making the industry more cost efficient as a whole.
Inorganic fertilizers are also known as commercial or synthetic fertilizers.
O When organic or inorganic fertilizers are applied properly, they are safe for plants and the environment
O Urea is a synthesized inorganic substance.
Answer:
last one is true statement
Answer:
Organic fertilizers have increased crop yields during the last 100 years, making the industry more cost efficient as a whole.
other is incorrect
Great strides have been made in the early detection of cancer in humans through the process of _____, which tests for protein signatures.
Answer:
Great strides have been made in the early detection of cancer in humans through the process of electrophoresis and genetics, which analyzes protein signatures.
Explanation:
The protein misfolds, or the malformations that are seen in immunofluorescence or electrophoresis help us detect malignant neoplasms in early stages, although the best way is to check if the 4 genetic mutations necessary to be able to determine and it is a cancerized field or cells were met. cancer with malignant potential, this is determined by means of genetic analysis where the promoter, inhibitor, regulatory genes and the oncogene are checked.
What type of hormone is testosterone?
a steroid hormone
a protein hormone
a neurotransmitter
Can someone please help mePut them all in order
Answer:
The 4th one should be the 1st one
And the 1st one should be the 2nd one
And tge 2nd one should be the 3rd one and the 3rd one should be the 4th one.
Which of these factors is involved in earthquake formation?
Answer:
The factors involved in earthquake formation are: plates moving, rocks breaking and movement below the surface.
What information would best further the understanding of the relationship between the number of amino acid codons and their frequency in proteins?
Answer:
Explanation:
The information about the structure of a protein is key to understand its function and why certain codons are distributed the way they are. We know that proteins have several structures:
The primary structure, which is defined by the sequence of nucleotides in RNA.
The secondary structure, the regular arrangement of amino acids within located regions of the polypeptide. The most common structures are α-helices and β-sheets.
The tertiary structure, the folding of the polypeptide chain as a result of the interactions between the lateral chains of the amino acids that are located in different regions of the primary sequence.
The quaternary structure, which consists of the interactions between different polypeptide chains in proteins formed by more than one polypeptide, as is the case with hemoglobin.
We know that structure and function are strongly related to one another, and a crucial determinant for the tertiary structure is the location of the hydrophobic amino acids inside the protein and the hydrophilic amino acids on the surface, where they interact with water. The interior of the folded proteins are constituted mostly of hydrophobic amino acids organized in α-helices and β-sheets, these secondary structures are located within the hydrophobic center of the protein. The bow regions that connect the elements of the secondary structure are located on the surface of the folded proteins, where the polar components form hydrogen bonds with water or with the lateral chains of the hydrophilic amino acids.
The process of a cell increasing its size, doubling its contents, dividing into 2 independent cell, and repeating the process over and over again. a meiosis b interphase c mitosis d cell cycle
Answer:
C. mitosis
Explanation:
Mitosis is one of the two types of cell divisions in which a single cell divides into two genetically identical daughter cells. Mitosis is used for growth and repair of tissues in living organisms.
Mitosis is also the process by which cells multiply/duplicate themselves. Hence, the process of a cell increasing its size, doubling its genetic contents, dividing into two independent cell, and repeating the process over and over again is called MITOSIS.
which sparrow would have the advantage if all fod sources were to disappear on the hypothetical island, leaving only marbles? if the marble remained the only food source, which kind of beak would the sparrow population have in the several years
Answer:
The spikes would be pointed and long, strong, to be able to break the surface of the marble and the particles.
Explanation:
The adaptation of the beaks is the selection of the fittest, in nature the species that best adapts and evolves according to the changes in the environment that surrounds it survives.
This was mentioned by Charles Darwin.
(21 points) pls help {brainliest}
Which type of restriction enzyme could be used to create recombinant DNA using methylated DNA?
A. Type III
B. Type I
C. Type II
D. Type IV
Answer:
Type IV
Explanation:
Which organelle in an animal cell would have the most water?
Answer:
The cytoplasm is the answer.
Explanation:
The passive movement of particles from a region of higher concentration to a
region of lower concentration is known as...
A. Diffusion
B. Active Transport
C. Osmosis
D. Selective Permeability
Answer:
Answer is A. Diffusion
Explanation:
Because diffusion is a passive process in which a substance moves from a higher concentration to a lower concentration until the concentration becomes equal
The passive movement of particles from a region of higher concentration to a region of lower concentration is known as diffusion. Thus, the correct option is A.
What is Diffusion?Diffusion may be defined as the passive movement of particles from a region of higher concentration to a region of lower concentration.
Active transport requires energy for the movement of particles. Selective permeability may be defined as the ability to differentiate the movements of different types of particles in and out of the membrane.
Therefore, the correct option for this question is A.
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Which of the following best explains how DCMU affected the reaction?
Which statement best explains the relationship between cellular respiration and photosynthesis?
a.The products of cellular respiration are the same as the products of photosynthesis.
b.The products of cellular respiration are the reactants for photosynthesis.
c.Plants only carry out photosynthesis, and animals only do cellular respiration.
d.Plants and animals can carry out both photosynthesis and cellular respiration.
Answer:
C
Explanation:
Photosynthesis uses CO2 while CR uses Oxygen. So far we have not found any animals (to my knowledge), that use Photosynthesis.
Why can’t a purine hydrogen bond with another purine within the sugar phosphate backbone of DNA? State your reason with all the details that are required to answer the question for full credit.
Answer:
due to the structural-binding properties of the nitrogen bases
Explanation:
Adenine and guanine are purines (two-carbon nitrogen ring bases) that pair with thymine and cytosine pyrimidine nitrogen bases (one-carbon nitrogen ring bases), respectively. These specific base-pair rules are due to their hydrogen bonds (i.e., van der Waals forces), which stabilize the structure of the DNA helix. Cytosine and guanine have three sites to form hydrogen bonds to each other, while adenine and thymine have only two sites. The specific interactions between purines and pyrimidines are critical for proper bonding and attachment to the sugar-phosphate DNA backbone (i.e., for the formation of the DNA double-helical arrangement).
The earth revolves ____ around the sun each year when viewed from above the North Pole
Help please!
Answer:
Counterclockwise is the answer?
Which type of energy is stored in fuels such as gasoline and batteries?
Chemical energy
Heat energy
Magnetic energy
Mechanical energy
please help will give brainlyest
Answer:
chemical energy..
Because fuels are made different compounds full of chemicals.
3
Select the correct answer.
Which equation represents the line that is parallel to y = 3 and passes through (-2,-8)?
A.
x = -2
B.
x = 3
C.
y = -8
D.
y = 3x − 2
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Post Test: Special Linear Relationships
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Answer:
A
Explanation:
Answer:
C. -8
Explanation:
CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION THANK YOU!!
Answer:oxygen
Explanation:
The midline that's the body is called
Answer:
The body's mid-line is an imaginary line down the centre of the body that divides the body into left and right. Crossing the body's mid-line is the ability to reach across the middle of the body with the arms and legs.
