The following question has two parts. First, answer Part A. Then, answer Part B. The diagram shows four possible genetic arrangements of a cell that contains two chromosomes during metaphase.

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Part A:

What is the diagram MOST LIKELY demonstrating?

A
Mutation

B
Crossing over

C
Random fertilization

D
Independent assortment

Part B:

Which statement BEST supports the choice made in Part A?

A
The diagram shows four daughter gametes that have exchanged genetic information between chromatids.

B
The diagram shows four unique gametes that are the result of receiving one random allele from each parent.

C
The diagram shows four unique gametes that are the result of two chromosomes separating in different ways.

D
The diagram shows four daughter gametes that incorrectly contain fewer chromosomes than the parent cells.

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

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen

Need the diagram below, which is not drawn to scale, shows the position of the earth, moon, and sun. what type of eclipse occurs when the earth, moon, and sun are lined up in the order shown? a. planetary eclipse b. solar eclipse c. martian eclipse d. lunar eclipse