A group of scientists is studying a certain species of fish. Previous genetic analysis has shown that eye color in this species is controlled by a single gene that has two alleles: a dominant allele ( ) that is associated with red eyes, and a recessive allele ( ) that is associated with black eyes.The scientists collected data about a population of these fish to help determine the population’s eye color allele frequencies. They found that out of   fish in the population,   fish had black eyes.Assuming that the population is in Hardy-Weinberg equilibrium, which of the following is the number of fish in the population that have the genotype  ?

A group of scientists is studying a certain gene in a population of fish. This gene has two alleles: a dominant allele ( ), and a recessive allele ( ). The scientists collected allele frequency data for the gene twice over a  -year period. The results are presented in the following table.Year Frequency of allele  Frequency of allele  2006   2018   After analyzing the data, the scientists determined that because the allele frequency changed, the fish population was not in Hardy-Weinberg equilibrium during the time period studied.Which of the following is the most likely reason that the population deviated from Hardy-Weinberg expectations during the study period?

In a population of 200 fish, 182 fish are blue, and 18 fish are red. 84 of the 182 blue fish are heterozygous for the color trait. What is the frequency of the red allele in the population? (Assume simple dominance/recessiveness of the color allele.)Multiple Choice0.30.70.510.60.09

n a population of koi fish, some individuals have red eyes and others have black eyes. The gene for eye color has two possible alleles. One allele is for red eyes (E), and the other allele is for black eyes (e).A certain koi fish in the population has the genotype ee for the eye color trait.Given this information, what phenotype does this koi fish have for the eye color trait?Choose 1 answer:Choose 1 answer:(Choice A)   black eyesAblack eyes(Choice B)   red eyesBred eyes

Suppose that fish size is a heritable trait in a population of fish. The allele conferring large size (S) is incompletely dominant to the allele conferring small size (s). Heterozygotes (Ss) are of intermediate size. Suppose that a population of fish is at Hardy-Weinberg equilibrium and the frequency of the S allele is 0.9. What proportion of the next generation will be of intermediate size?The image shows two fishes of different sizes, with one fish bigger than the other.Multiple Choice0.180.90.010.090.81

Skin color in a fish is inherited via a single gene with four different alleles. How many different genotypes would be possible in this system?