K.C.S.E Biology Q & A - MODEL 1996PP1QN 18
In an experiment black mice were crossed and the offspring were back and brown. The gene for black colour is dominant over that of brown colour.
Using letter B to represent the gene for black colour and b to represent the gene for brown colour
(a) Work out the genotypes of the F1 generation
(b) What is the phenotype ration of the spring
State the function of Deoxyribonucleic acid (DNA) molecule.
Controls/regulates/enzymes/ synthesis is the material for inheritance