Question

In dogs, the gene for fur color has two alleles. The dominant allele (F) codes for grey fur and the recessive allele (f) codes for black fur.
The female has black fur. The male has black fur. Figure out the genotypes of their possible puppies by using a Punnett Square.


Ff:



FF:



ff:


1.

0%


2.

25%


3.

50%


4.

75%


5.

100%
CONTINUATION OF THE LAST QUESTION: The female has black fur. The male has black fur. Figure out the phenotypes of their possible puppies by using a Punnett Square.

Grey fur


Black fur

1.
0%

2.
25%

3.
50%

4.
75%

5.
100%

Answer 1

The offsprings should have 100% black fur. Since both parents have the recessive black fur (ff), their offsprings will have black fur as well. 4 puppies have black fur, 0 have grey fur.