Question

Among the progenies born from the mating of a white and an Andalusian fowl there are 5 white chickens. What is the expected total number of progeny?

(a) 5

(b) 10

(c) 15

(d) 25

I have been asked this question during an interview.

This key question is from Incomplete Dominance and Codominance in section Extension and Deviation from Mendelian Genetic Principles of Cytogenetics

Answer 1

The correct option is (b) 10

The best explanation: In the following case half of the progeny so born must have been White while there is ½ probabilities that the rest were Andalusian. So overall the number of progeny is expected to be 10.