Essentials of Genetics 9th Edition by Michael Palladino William Klug, Michael Cummings, Charlotte Spencer

Exercise 5

In foxes, two alleles of a single gene, P and p , may result in lethality ( PP ), platinum coat ( Pp ), or silver coat ( pp ). What ratio is obtained when platinum foxes are interbred? Is the P allele behaving dominantly or recessively in causing (a) lethality; (b) platinum coat color?