Question

Brown eyes are dominant over blue eyes. If a woman with a dominant brown eyes ,(homozygous) reproduces with a man with recessive blue eyes , what is the chance they will have a child with brown eyes?

Answer 1

Answer:

The chances are 100%

Explanation:

A dominant allele is the allele that expresses itself in the offspring even if it is present in heterozygous condition(Bb). So when a woman with homozygous dominant(BB) condition of brown eyes reproduces with a man having recessive blue eyes(bb) then all the offsprings with heterozygous dominant condition for brown eyes will be produced.

                               B      B

                           b  Bb   Bb

                           b  Bb    Bb

All the offsprings will have one dominant allele which is enough to produce brown eyes therefore all the offsprings will have brown eyes. So the chances are 100%.