There is a population of drosophila flies in a small fruit shop
due to sudden mutation, the eye color of some of the flies changes from red to white
red (represented by r) is the dominant gene, and white (represented by r) is a recessive gene
due to this, the gene frequency of allele r changes from 0.38 to 0.40.
what will be the new genotype frequencies in that population?
( p + q = 1, p2 + 2pq + q2 = 1)
a.) p2 = 0.36, 2pq = 0.48, q2 = 0.16
b.) p2 = 0.32, 2pq = 0.23, q2 = 0.45
c.) p2 = 0.25, 2pq = 0.36, q2 = 0.39

Awoman whose sister tested positive for a specific mutation in the brca1 gene, which increases the risk for breast and ovarian cancer, is found not to have that mutation but does have a mutation of unknown significance near the known mutation site. how should this woman be counseled? select one: a. she should be informed that her risk for breast cancer is greater than the general population but not as great as her sister’s risk. b. she should be informed that because she does not have the mutation, her risk for breast cancer is not greater than that of the general population. c. she should be informed of her gene mutation status and be presented with all the available prophylaxis options and reconstruction options. d. she should be informed that she does not have the specific mutation but that because another mutation is present she should be vigilant about screening

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different