Please help me!!!! I need help with this practice test question.

In Guinea pigs, the brown coat (B) is a dominant over the cream-coloured coat (b), and straight hair (H) is dominant over curly hair (h). Using a Punnett square, complete the cross between a heterozygous brown, curly-haired individual and a cream-coloured, homozygous straight-haired individual. State the parent genotypes, gametes, and the F1 Phenotypes and genotypes.

Bbhh and bbHH, so second parent can only give bH gametes. Use Punnett square to take it from there.

http://www.google.com/search?client=safari&rls=en&q=punnett+square&ie=UTF-8&oe=UTF-8

To solve this problem, we will use a Punnett square to determine the possible genotypes and phenotypes of the offspring (F1 generation) resulting from the cross between a heterozygous brown, curly-haired individual (Bbhh) and a cream-colored, homozygous straight-haired individual (bbHH).

Step 1: Determine the parent genotypes:
- The heterozygous brown, curly-haired individual has the genotype Bbhh.
- The cream-colored, homozygous straight-haired individual has the genotype bbHH.

Step 2: Determine the gametes:
- The heterozygous brown, curly-haired individual (Bbhh) will produce two types of gametes: Bh (brown, curly hair) and bh (brown, straight hair).
- The cream-colored, homozygous straight-haired individual (bbHH) will produce two types of gametes: bH (cream-colored, straight hair) and bH (cream-colored, straight hair).

Step 3: Construct the Punnett square:

| Bh | bh |
-------|---------------|--------------|
b | BbHh | bbHh |
-------|---------------|--------------|
b | BbhH | bbHH |
-------|---------------|--------------|

Step 4: Determine the F1 genotypes and phenotypes:
- From the Punnett square, we can see that there are four possible combinations of genotypes in the F1 generation: BbHh, bbHh, BbhH, and bbHH.
- The corresponding phenotypes for each genotype are as follows:
- BbHh: Brown coat, straight hair
- bbHh: Cream-colored coat, straight hair
- BbhH: Brown coat, curly hair
- bbHH: Cream-colored coat, straight hair

Therefore, the F1 Phenotypes and genotypes are:
- BbHh: Brown coat, straight hair
- bbHh: Cream-colored coat, straight hair
- BbhH: Brown coat, curly hair
- bbHH: Cream-colored coat, straight hair