Biology question?

1) a man and a woman are both carriers of sickle cell anemia. The man is color blind. The woman is not color blind, nor is she a carrier of color blindness. The proportion of all their children who will be carriers of color blindness and also have sickle cell anemia is


a) 1/32


b)1/16


c) 1/6


d) 1/2


e) 1/8


2) when does chromosome replication occur in a eukaryotic cell?


a) Prophase


b) Metaphase


c) Interphase


d) Telophase


e) Anaphase


3) which of the following is an advantage of sexual reproduction?


a) Elimination of most harmful genes


b) Increased number of beneficial mutations


c) Rapid production of genetically identical offspring


d) Generation of genetic diversity


4) which of the following contributes to genetic diversity?


a) Independent alignment of chromosomes during metaphase I of meiosis


b) Random fertilization


c)mitosis


d) B and C above both contribute to genetic diversity


e) A,B, and C above all contribute to genetic diversity

Biology question?
3


d





4


a
Reply:1 e. 1/4 will sickle cell. Mans X chrom has gene. He will pass it to only daughters but all daughters will be carriers because he has only one.


2. C


3. D


4. E
Reply:1=e 2=c 3=d 4=e

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