Question

Some laboratory mice are spotted, due to a dominant gene. Solid color is recessive. A solid color female mouse is mated to a spotted male. Both parents are homozygous. What percentage of mice should be found in the litter?

Answer 1

Answer: percentage of mice that will be spotted is 100%, and 0% chance of being solid colored.

Explanation:  First, homozygous means each parent have matching chromosomes (Like XX, instead of Xx)

Lets make a punnet square and show the data. We will use 'S' for spotted and 's' for solid

The punnet square shows that the percentage of mice that will be spotted is 100%, and 0% chance of being solid colored.

Hope this helps :)

Answer 2

The percentage of mice that will be spot-ted is 100%, and 0% chance of being solid colored.

Calculation of the percentage:

In the first time, h-o-m-o-z-y-g-o-u-s means each & every parent should have matching chromosomes (Like X-X, instead of X-x)

So based on this, we can say that The percentage of mice that will be spot-ted is 100%, and 0% chance of being solid colored.

in this way, the percentage is determined.

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