27. Part A. Make a punnett square (as best as you can in this online format) and cross parents both with the thumb genes Aa (A=normal thumb, a=hitchhikers thumb) and show the results. (1 pt)

Question

27. Part A. Make a punnett square (as best as you can in this online format) and cross parents both with the thumb genes Aa (A=normal thumb, a=hitchhikers thumb) and show the results. (1 pt) 
         A        a
A      AA      Aa
a      Aa       aa

27 Part B. (1 pt) Approximately what percentage of their children would have a hitchhikers thumb? 
Approximately  25% percent of their children would have a hitchhikers thumb.

27 Part C. (1 pt) What percentage of their offspring shown in your punnett square COULD have a child with a hitchhikers thumb assuming they reproduced with someone carrying the "a" allele? Note: EC may be awarded for well detailed answers!

Zoi · Answer

Please check my punnet square A a A AA Aa a Aa aa and if the percentage I cam up with is correct for part b. I really don't understand part c so please explain that to me!!! Thank you!

bobpursley · Answer

a, and b parts are ok part c aa x Aa offspring then aA,aa, aA, aa or half will have aa