Chapter:

Principles-of-Inheritance-and-Variation

Short / Long answer type questions.
A  dihybrid heterozygous round yellow seeded garden pea (Pisum sativum) offspring was crossed with a double recessive parent. 
(a) What type of a cross is this?  b) Work out genotype and phenotype of progeny. (c)What principle of Mendel is illustrated through result of this cross?