Question

1. the female dog has black fur. the male dog has black fur. figure out the phenotypes and genotypes of their possible puppies by using a punnett square.

% of possible genotypes:
ff:
ff:
ff:
% of possible phenotypes:
black fur:
grey fur:

Explanation:

To solve this, we first need to know the genotypes of the parent dogs. Since both have black fur, we assume the dominant allele (F) gives black fur and recessive (f) gives grey. Let's assume both parents are heterozygous (Ff) for demonstration (common case if grey is recessive).

Step1: Create Punnett Square

	F	f
f	Ff	ff

Step2: Calculate Genotype Percentages

• FF: 1 out of 4, so $\frac{1}{4} \times 100 = 25\%$
• Ff: 2 out of 4, so $\frac{2}{4} \times 100 = 50\%$
• ff: 1 out of 4, so $\frac{1}{4} \times 100 = 25\%$

Step3: Calculate Phenotype Percentages

• Black fur (FF or Ff): 3 out of 4, so $\frac{3}{4} \times 100 = 75\%$
• Grey fur (ff): 1 out of 4, so $\frac{1}{4} \times 100 = 25\%$

Answer:

• % of possible Genotypes:
• FF: 25%
• Ff: 50%
• ff: 25%
• % of possible Phenotypes:
• Black fur: 75%
• Grey fur: 25%