Question

Can any body please help me out? Thank you :)

Answer 1

Answer:

9. 50%

10. There is a 2 in 4 probability their offspring will be Heterozygous for ear lobes

Explanation:

So if pendulous ear lobes are (E) and adherrent ear lobes are (e)

Its important to regonize that a man who has pendulous ear lobes whose mother had adherrent ear lobes should be written as (Ee) seeing as how the pendulous ear lobes are dominant over adherrent ear lobes

also, recognize that while using a punnet square you have a set of two alleles

Note: The husband is Heterozygous

The Husbands: (Ee) pendulous ear lobes

The Wifes: (ee) adherrent ear lobes

Heterozygous just means they can either pass on the pendulous ear lobes or adherrent ear lobes so their alleles look like (Ee)

you can begin the problem by using a punnet square:

            e                   e    

E         Ee                  Ee

e        ee                   ee