When crossing a white rabbit with a black rabbit, 6 black and 5 white rabbits were obtained.

When crossing a white rabbit with a black rabbit, 6 black and 5 white rabbits were obtained. What are the genotypes of the parents and rabbits?

In this problem, inheritance occurs according to the type of complete dominance. The ratio of phenotypes in the offspring is approximately 1: 1, from which it follows that one of the parents was a heterozygous organism (mother), and the second was homozygous for a recessive trait (father). The black gene is dominant (A), the white gene is recessive (a).

R: Aa (rabbit) x aa (rabbit) – genotypes of the parents;

G: A, and x a – possible gametes;

F: Aa – 50% black;

aa – 50% white.



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