A human has 23 pairs of chromosomes. Ignoring the effects of crossing over, what is the...
A human has 23 pairs of chromosomes. Ignoring the
effects of crossing over, what is the likelihood that a woman could
produce an egg cell having only maternal homologues (only "blue"
chromosomes, no "red" chromosomes).
Homework Answers
23 pairs are present in humans. Of each pair one chromosome will be transmitted to gametes. This probability is 1/2.
So, for all 23 pairs probability of getting only blue or maternal homologue is , (1/2)^ 23
That is 1/2× 1/2× 1/2× 1/2×1/2×1/2×1/2×1/2×1/2×1/2×1/2×1/2×1/2×1/2×1/2×1/2×1/2×1/2×1/2×1/2 = 1/8,388,608
That is probability of having such combination is 1 out of 8,388,608.
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