8. In rabbits, the allele for black fur, B is dominant over the allele for brown fur b. Calculate the probability of a homozygous dominant (BB) offspring resulting from a cross between t arents with the genotype Bb. 50% 25% 100% 75% 0%

To calculate the probability of a homozygous dominant (BB) offspring resulting from a cross between parents with the genotype Bb, we can use a Punnett square.<br /><br />A Punnett square is a diagram that shows the possible combinations of alleles that can occur in the offspring. In this case, we have two parents with the genotype Bb.<br /><br />The Punnett square for this cross would look like this:<br /><br />| | B | b |<br />|---|---|---|<br />| B | BB | Bb |<br />| b | Bb | bb |<br /><br />From the Punnett square, we can see that there is one BB combination out of the four possible combinations. Therefore, the probability of a homozygous dominant (BB) offspring resulting from this cross is 1 out of 4, or 25%.<br /><br />So, the correct answer is $25\%$.