In a group of guppies, some individuals have a gray body and others have a golden body. In this group, the gene for the body color trait has two alleles. The allele for a golden body (b) is recessive to the allele for a gray body (B). BB, Bb, Bb,bb.
What is the probability that a guppy produced by this cross will be homozygous dominant for the body color gene?
The probability of producing a guppy that is homozygous dominant for the body color gene (BB) can be determined by looking at the offspring from the cross.
In this case, one parent is homozygous dominant (BB) and the other parent is homozygous recessive (bb).
The possible combinations for the offspring are as follows:
- 100% of the offspring will have the genotype Bb
Therefore, there is a 0% probability of producing a guppy that is homozygous dominant for the body color gene (BB) from this cross.