Question

Red-green color blindness is an X-linked recessive disorder.


A Punnett square is shown. The columns are labeled X Upper B and Upper Y. The rows are labeled x Upper B and x b.


What is the probability of having red-green color blindness for the cross that is represented by the Punnett square?

0 percent

25 percent

50 percent

75 percent

Answer 1

Answer:

50 percent

Explanation:

By creating a punnet square it would result in XXBB, XBY, XxBb, and xBY. Because red-green color blindness is recessive there must be two x. There are two out of the four combinations that have 2 x.

Answer 2

Answer:

25%

Explanation:

Just took the test on edge2020