A Canadian population of Ross’s geese, small Arctic nesting geese, has 10,000 individuals.  Ross’s geese exist in two color morphs, grey or yellow.  The color is controlled by two alleles at a single gene locus.  The yellow allele (Y) is dominant to the grey allele (y).  Assuming the population is in Hardy-Weinberg equilibrium with 20% of the population having the y allele, answer the following questions. What would be the percentages of the body color phenotypes after 25 generations if the population maintains the conditions of Hardy-Weinberg equilibrium?    Percentage of yellow phenotype?                                          Percentage of grey phenotype?

Color in a species of minnow is determined by a single locus with two alleles: D and d. DD individuals are dark, Dd are intermediate, and dd are pale. In a population that is in Hardy–Weinberg equilibrium, we count 74 pale minnows out of 202. How many minnows do you expect to be dark?

the aggresive behavior in cats is controlled by a completely dominant gene locus A. There are 46 docile cats in subdivision with a population of 158. Question: Determine if how many animals are heterozygous and how many animals have the dominant allele? provide solution

The gel image below shows 7 alleles, let's call them 1-7 in order of size, with 1 being the largest and 7 being the smallest. Imagine the unlikely case that the 11 individuals represented in the gel image above were truly representative of the population. What is the frequency (f) of allele 6? Give your answer as a percentage, to one decimal place, do not include the % symbol. Answer: In the gel image below the frequency of allele 6 is 18 percent. Photograph of UV illuminated 1 % agarose TBE gel run for 40 minutes at 120 V, showing the result of PCR from a variable number tandem repeat region in 11 differentindividuals (A-K) A B C DE F G H IJK 2000| 1650 1000 850 600 500 Key: Lane 1: DNA ladder, see image for fragment sizes (bp). Lanes 2-13: PCR products from the same variable numbertandem repeat (VNTR) autosomal region of DNA from 11 different individuals (A-K).

You sample a fruit fly (Drosophila melanogaster) population for the alcohol dehydrogenase (Adh) gene. There are two alleles, designated A₁ and A2, for this locus in this population. The data you collected is shown in this table (this is your observed data). Is this population in Hardy-Weinberg equilibrium at this locus? To save you time, I have calculated the expected number of individuals for each genotype and included them in the table. For your answer, you should provide: • an answer to the question: Is this population in Hardy-Weinberg equilibrium for this locus? • the value of your chi-square result you based this answer on (you do not have to show your calculations for the homework, but you would on an exam) • (if you say the population is NOT in HW equilibrium) an evaluation of which genotype(s) are more or less common than expected in the observed population # individuals genotype A₁A₁ # individuals genotype A₁A2 # individuals genotype A₂A2 154 117 Observed data Expected data…

In a population of 199 individuals, a locus has two alleles: E and e. If 33 individuals have the ee genotype, and the locus is at Hardy-Weinberg equilibrium, what is the frequency of the EE genotype? Round your answer to the second decimal place. Your Answer:

For many years, there has been a large collection of pea plants with a mixture of yellow and green pea pod colours in a savannah. But, there has been a recent infestation of wild rabbits with a preference for eating plants with yellow pea pods. Assume that at the start of the infestation, the alleles in the pea plant population were in Hardy-Weinberg equilibrium.  What does it mean for the alleles in the pea plant population to be in Hardy-Weinberg equilibrium?  What is expected to happen to the allele frequency of the g allele in the subsequent pea generations after the rabbits have been introduced? Explain your answer using terms from Darwinian evolution theory.

You are studying a population of mice in a field that have black (genotype BB), dark brown, (Bb) or light brown (bb) fur.   In your population you have 49 black individuals, 274 dark brown and 206 light brown.   What is the frequency of the B allele in the population? (round to 2 decimal places)

Example: I go to a different population of fruit flies that have the same two alleles for eye-color. I suspect that the alleles occur in different frequencies in this second population. I sample 1000 flies and discover 10 that have brown eyes. What are the estimated frequencies of the "R" and "r" alleles in this population? Answer: Again, p2 + 2pq + q2 = 1. The term q2 = the relative frequency of homozygous recessive individuals, which corresponds to the ten brown-eyed flies I counted out of 1000 flies sampled. Thus, q2 = 10/1000 = 1/100. q = the square root of 1/100 or 0.1. Thus the frequency of "r" in this second population is 0.1 and the frequency of the "R" allele is 1 - q or 0.9. Problem 1: Phenylketonuria (PKU) is a disease caused by the build-up of the byproducts of metabolizing phenylalanine. It is caused by a defective, recessive allele. If a child is homozygous for this recessive allele, it will develop PKU. In the United States, PKU is detected in approximately 1 in 10,000…

Snow geese (Chen caerulescens) come in two color types, white “snows” and “blues” with dark bodies. A single gene controls coloration, where the dark (“blue”) allele (D) is dominant. A population of 30,012 geese includes 9236 dark individuals. Genetic testing reveals that 7636 of the 9236 dark individuals are heterozygous (Dd). According to the Hardy-Weinberg equilibrium, what is the expected number of individuals of genotype Dd? Group of answer choices A.) 14752.40 B.) 13596.09 C.) 8898.56 D.) 3608.26