how does natural selection affect allele frequency over several generations?(hypothesis:))
Homework Answers
As natural selection is the process of selection of individuals with survival advantage over other individuals. In so in natural selection allele frequency of some of genes decreases and allele frequency of some genes increases. Genes which are responsible for phenotypic characters that help individual in its survival there frequency will increase in coming generations for survival. Some genes which does not provide survival advantage in individual, there allele frequency will decrease in coming generations.
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how
does natural selection affect allele frequency over several
generations?(hypothesis:))
Natural selection and genetic drift are two mechanisms that affect allele frequency at genetic variants in...
Natural selection and genetic drift are two mechanisms that affect allele frequency at genetic variants in the population. Describe how each mechanism can affect allele frequency.
What effect does natural selection have on allele frequency at one locus in a population of...
What effect does natural selection have on allele frequency at one locus in a population of diploid organisms of finite size?
how does mutation rate affect the equilibrium value of the recessive allele ? how does complete...
how does mutation rate affect the equilibrium value of the recessive allele ? how does complete dominane v incomplete dominance affect natural selection ?
2. (8 pts) The top panel below shows the tracking over 20 generations of frequency of...
2. (8 pts) The top panel below shows the tracking over 20 generations of frequency of a particular allele in 20 populations of 9 individuals each; the lower panel is the same except for population sizes were held at 50 individuals. (a) How many populations reached fixation in the two panels? Define fixation in your answer. What explains the difference between the fixation rates between the two panels? (b) Does this illustrate gene flow, genetic drift, or natural selection (circle...
How does transgenerational epigenetic inheritance affect Darwinian selection? Emphasise on how epigenetics affects natural selection and...
How does transgenerational epigenetic inheritance affect Darwinian selection? Emphasise on how epigenetics affects natural selection and give examples
9. Approximately how many generations would it take to change the frequency of an allele from...
9. Approximately how many generations would it take to change the frequency of an allele from 1.0 to 0.80 if the mutation rate is 1 x 105 for this gene?
9. Approximately how many generations would it take to change the frequency of an allele from 1.0 to 0.80 if the mutation rate is 1 x 105 for this gene?
How you think the allele frequencies are being affected by genetic drift in our simulation. Do...
How you think the allele frequencies are being affected by genetic drift in our simulation. Do you think this is speeding up or slowing down the rate of allele change? Why? Plot a graph of the H (p) allele frequency over generational time (show a minimum of three generations) showing what you would expect to happen if both natural selection and genetic drift are happening. Make sure to explain why you think this pattern would occur
34. Over the past several decades, natural selection has caused populations of Staphylococcus aureus (an infectious...
34. Over the past several decades, natural selection has caused populations of Staphylococcus aureus (an infectious wound bacterium) to evolve resistance to most antibiotics. If antibiotic use were stopped, what would you predict would happen to these S. aureus populations? A. They will go extinct without the antibiotic. B. The populations will begin colonizing new environments. C. The frequency of nonresistant forms will increase in these populations. D. The frequency of resistant forms will definitely increase in these populations. 35....
24. Over the past several decades, natural selection has caused populations of Staphylococci aureus (an infectious...
24. Over the past several decades, natural selection has caused populations of Staphylococci aureus (an infectious wound bacterium) to evolve resistance to most antibiotics. If antibiotic use were stopped, what would you predict would happen to these S. aureus populations? a. They will go extinct without the antibiotic. b. The frequency of resistant forms will increase in these populations. c. The populations will begin colonizing new environments. d. The frequency of nonresistant forms will increase in these populations. 25. Natural...
In the case of directional selection, if the advantageous allele (b) is recessive and a less...
In the case of directional selection, if the advantageous allele (b) is recessive and a less advantageous allele (B) is dominant: A. b will be lost in the population because the dominant allele will increase in frequency by natural selection B. b will increase in frequency at the same speed as if it was a dominant advantageous allele, because what matters is the coefficient of selection and not if the allele is dominant or recessive C. b will increase in...
2. (8 pts) The top panel below shows the tracking over 20 generations of frequency of a particular allele in 20 populations of 9 individuals each; the lower panel is the same except for population sizes were held at 50 individuals. (a) How many populations reached fixation in the two panels? Define fixation in your answer. What explains the difference between the fixation rates between the two panels? (b) Does this illustrate gene flow, genetic drift, or natural selection (circle...
9. Approximately how many generations would it take to change the frequency of an allele from 1.0 to 0.80 if the mutation rate is 1 x 105 for this gene?
9. Approximately how many generations would it take to change the frequency of an allele from 1.0 to 0.80 if the mutation rate is 1 x 105 for this gene?
24. Over the past several decades, natural selection has caused populations of Staphylococci aureus (an infectious wound bacterium) to evolve resistance to most antibiotics. If antibiotic use were stopped, what would you predict would happen to these S. aureus populations? a. They will go extinct without the antibiotic. b. The frequency of resistant forms will increase in these populations. c. The populations will begin colonizing new environments. d. The frequency of nonresistant forms will increase in these populations. 25. Natural...
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