In a group of deer mice, some individuals have a hairy body and others have a hairless body. In this group, the gene for the body hair trait has two alleles. The allele for a hairless body (b) is recessive to the allele for a hairy body (B).
Complete the Punnett square below to show all possible genotypes of the offspring from a cross between two deer mice.
Questions
Since the Punnett square is not provided, I cannot complete it. However, I can help you understand how to construct a Punnett square and determine the possible genotypes of the offspring.
To create a Punnett square, you need to write the alleles for each parent along the top and side of the square. In this case, since both parents are deer mice, we can represent their genotype as follows:
Parent 1: Bb (hairy body)
Parent 2: Bb (hairy body)
The genotype of one parent is Bb (hairy body), which means that they have one dominant allele (B) for hairiness and one recessive allele (b) for hairlessness.
To complete the Punnett square, you need to cross the alleles of the parents. Here is how you can do it:
| B | b |
-----------
B|BB | Bb |
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b|Bb | bb |
The Punnett square shows all possible combinations of alleles that the offspring can inherit. The genotype of each offspring is determined by the combination of alleles from the parents.
In this case, the Punnett square shows that there are four possible genotypes for the offspring: BB, Bb, Bb, and bb.
- BB: This genotype represents offspring that have two dominant alleles (B) for a hairy body. These mice will have a hairy body.
- Bb: This genotype represents offspring that have one dominant allele (B) and one recessive allele (b) for body hair. These mice will also have a hairy body because the dominant allele (B) is present.
- Bb: This genotype represents offspring that have one dominant allele (B) and one recessive allele (b) for body hair. These mice will also have a hairy body because the dominant allele (B) is present.
- bb: This genotype represents offspring that have two recessive alleles (b) for a hairless body. These mice will have a hairless body.
I hope this helps! Let me know if you have any further questions.