Question 7%0D%0A%0D%0A%0D%0AIn rabbits, black fur is dominant to white fur. As a rabbit breeder, you crossed a bb male with a Bb female, please complete the Punnett square for the possible genotypes of the offspring. Then complete, the phenotype ratio (out of 4) of the offspring.%0D%0A%0D%0A***Please follow all Punnett square rules to complete this question.
To complete the Punnett square, we need to list the possible genotypes of the offspring resulting from crossing a bb male with a Bb female.
The male rabbit has the genotype bb, which means it carries two copies of the recessive white fur allele.
The female rabbit has the genotype Bb, which means it carries one dominant black fur allele and one recessive white fur allele.
To create the Punnett square, we need to cross the alleles from the male (bb) with the alleles from the female (Bb):
| | b | b |
|---|---|---|
| B | Bb | Bb |
| b | bb | bb |
From this Punnett square, we can see that there are two possible genotypes of the offspring: Bb and bb.
Now let's determine the phenotype ratio of the offspring:
- Bb means the rabbit will have black fur because the dominant black fur allele (B) is present.
- bb means the rabbit will have white fur because both alleles are the recessive white fur allele (b).
Out of the 4 possible combinations, 2 of them will have black fur (Bb), and 2 of them will have white fur (bb).
Therefore, the phenotype ratio of the offspring is 2:2, or simplified, 1:1.