The graph below shows the change in the frequency of one allele over 500 generations in a large population. Which of the following statements describes the change depicted in the graph? 1 .09 .08- .07 .06 .05 .04 .03- .02- .01- 50 100 150 200 250 300 350 400 450 500 Generation A. Environmental pressures selected against this allele, which confers an advantage to the organism. B. Environmental pressures selected in favor of this allele, which confers an advantage to the organism. C. Environmental pressures selected in favor of this allele, which confers a disadvantage to the organism. Frequency of Allele

The graph below shows the change in the frequency of one allele over 500 generations in a large population. Which of the following statements describes the change depicted in the graph? 1 .09 .08- .07 .06 .05 .04 .03- .02- .01- 50 100 150 200 250 300 350 400 450 500 Generation A. Environmental pressures selected against this allele, which confers an advantage to the organism. B. Environmental pressures selected in favor of this allele, which confers an advantage to the organism. C. Environmental pressures selected in favor of this allele, which confers a disadvantage to the organism. Frequency of Allele

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter11: Evolution And Its Processes

Section: Chapter Questions

Problem 6RQ: Galapagos medium ground finches are found on Santa Cruz and San Cristóbal islands, which are...

See similar textbooks

Similar questions

10,000 individuals are sampled from a population and are found to display one of three blood types: AA with 6800 individuals, AB with 2800 individuals and type BB with 400 individuals. a) What is the frequency of each genotype in the population? b) What is the frequency of the A allele? c) What is the frequency of the B allele? d) If the next generation contains 25,000 individuals, how many would have blood type BB, assuming the population is in Hardy-Weinberg Equilibrium?
In achondroplastic dwarfism, an autosomal dominant disease, the gene is lethal in homozygotes. If the frequency of the normal allele is 0.99, what is the heterozygote frequency? a. 0.01 b. 0.02 c. 0.98 d. 0.99 An autosomal recessive gene is lethal in homozygotes. In a population at Hardy- Weinberg equilibrium, how many generations will it take to eliminate the gene from the population a.100 b.It will not be eliminated from the population. c.1 d.25
for round 1. How many generations did it take for an allele to become fixed in the population? (See the number of generations on the X axis of your graph). for wrinkled 2. How many generations did it take for an allele to become fixed in the population? (See the number of generations on the X axis of your graph). Discuss the difference in the number of generations it took for your alleles to be fixed when you were selecting for round peas vs wrinkled peas. Which took more generations? How big was the difference? What do you think is the reason for this difference?
Suppose that in a population the frequency of a particular recessive condition is 1/400. Assume this is locus with two alleles (A and a) in the population and that the population is at Hardy–Weinberg equilibrium. What is the frequency of the carriers of this condition in the population? A. 0.9025 B. 0.0025 C. 0.05 D. 0.095 E. 0.0475
A group of four birds flies to a new location and initiates a new colony. Three of the birds are homozygous AA, and one bird is heterozygous Aa. A. What is the probability that the a allele will become fixed in the population via genetic drift? B. If fixation of the a allele occurs, how long will it take? C. How will the growth of the population, from generation to generation, affect the answers to parts A and B? Explain.
Assuming a population is in Hardy-Weinberg equilibrium, an increase in the frequency of the p(A) allele from 0.6 to 0.9 would result in which of the following outcomes? a. A decrease in the number of homozygous dominant individuals within the population b. A decrease in the number of homozygous recessive individuals within the population c. An increase in the number of homozygous recessive individuals within the population d. An increase in the number of heterozygotes within the population e. No change in genotypic frequency within the population
Consider the first copy of an allele for insecticideresistance that arises by mutation in a populationof insects exposed to an insecticide. Is this mutation an adaptation? If, after some generations,we find that most of the population is resistant,is the resistance an adaptation? If we discovergenetic variation for insecticide resistance in apopulation that has had no experience of insecticides, is the variation an adaptation? If an insectpopulation is polymorphic for two alleles, eachof which confers resistance against one of twopesticides that are alternately applied, is thevariation an adaptation? Or is each of the tworesistance traits an adaptation?
You sample the frequency of an allele in a population over 12 consecutive generations and find that the frequency of the allele changes as follows: Generation 1 2 3 4 5 6 7 8 9 10 11 12 Frequency 0.75 0.73 0.72 0.71 0.70 0.69 0.67 0.66 0.65 0.64 0.62 0.61 How would you best characterize this allele and this population? A. The allele is under selection and the population size is very small B. The allele is under selection and the population size is very large C. The allele is not under selection and the population size is very small D. The allele is not under selection and the population size is very large
In the experiment of genetic drift, suppose you have a population of 150 butterflies, but a wildfire devastates the population and only 24 butterflies survive. What percent does the colony decrease by?
Suppose that gene B occurs in a unicorn population where the frequency of the B1 allele is 0.5 and the frequency of the B2 allele is 0.4. What is the frequency of the B3 allele, assuming that there are only 3 alleles in the population? O The frequency of B3 = 0.1 because 0.5 +0.4+ B3 = 1. O The frequency of B3= (0.4)2 = 0.16 O The frequency of B3= 0.9 because 0.5 +0.4 = 0.9 O There is not enough information to determine the frequency of the B3
Assume you have a population with alleles A and a at a genetic locus. You measured the population and found 30 AA homozygotes, 100 Aa heterozygotes, and 70 aa homozygotes. What is the frequency of A and a in the population? a. A = 0.3; a = 0.7 b. A = 0.7; a = 0.3 c. A = 0.4; a = 0.6 d. A = 0.6; a = 0.4
Here C has 2 alleles C1 and C2 and same with D allele. C1D1 are the haplotypes for both of the populations: C1 D1 C1D1 First Population 0.3 0.5 0.45 Second Population 0.5 0.2 0.15 Answer the following: 1. If you sample 2 copies of the gene that is C from first population what can be the probability that they are both C1 alleles? 2. You have sampling an C1 allele from 1st popu. If you sample one more copy from first population, what is the probability that it will also turn out to be allele that's C1? 3. Find the expected frequency of haplotype from 1 st population.