Please Use the Following Information to Answer the Question(s) Below

question 53

Multiple Choice

Please use the following information to answer the question(s) below.
A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has codominant alleles M and N.
-The human X and Y chromosomes

• A) are both present in every somatic cell of males and females alike.
• B) are about the same size and have approximately the same number of genes.
• C) are almost entirely homologous, despite their different names.
• D) include genes that determine an individual's sex.