A. RRrr and YYyy
B. RRYY and rryy
C. RRyy and YYrr
D. RrYy and RrYy
The question was posed to me during a job interview.
The above asked question is from Inheritance of Two Genes-1 in chapter Principles of Inheritance and Variation of Biology – Class 12
The explanation: The dihybrid cross is used to the inheritance pattern of two contrasting characters. Hence, they should be true-breeding. One for both dominant traits and the other for both recessive traits.