K.C.S.E Biology Q & A - MODEL 2011PP2QN02
In humans, hairy ears is controlled by a gene on the Y Chromosome.
(a) Using letter Y^H to represent the chromosome carrying the gene for hairy ears, work out a cross between a hairy eared man and his wife.
(b) (i) What is the probability of the girls having hairy ears?
(ii) Give a reason for your answer in (b(i) above.
P.O Box 1189 - 40200 Kisii
Tel: 0728 450 424
Tel: 0738 619 279
Tel: 0763 450 425
E-mail - firstname.lastname@example.org