Blood Type Problem?

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Two black mice were mated over several years and produced 29 black and 9 white offspring. What are the most likely genotypes of the parents? Use B for black allele.

2007-11-25 06:40:06 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Biology

2 answers

The parents were probably Bb and Bb. It is necessary that both have a recessive b allele, because they produced white offspring. If you draw a Punnett Square for Bb and Bb parents, the ratio of B:b is 3:1. The ratio of black to white offspring is 29:9, which is close to 3:1, so Bb and Bb are likely genotypes of the parents.

2007-11-25 06:47:09 · answer #1 · answered by Anita 5 · 0⤊ 0⤋

The answer above is correct, however this is NOTa blood type problem ,which involves multiple alleles and co-dominance.

2007-11-25 14:54:14 · answer #2 · answered by ursaitaliano70 7 · 0⤊ 0⤋