Question

In a cross between wild type pure breeding recessive and heterozygous dominant trait, if 4 progeny are found to be expressing the dominant phenotype, what will be the expected number of recessive?

(a) 1

(b) 2

(c) 3

(d) 4

I have been asked this question by my school principal while I was bunking the class.

I want to ask this question from Monohybrid Cross in section Mendelian Genetics of Cytogenetics

Answer 1

Right choice is (d) 4

Explanation: In this case, the ratio of recessive to dominant will be 1:1, so if there are 4 dominant then around 4 recessive progeny should be produced.