Principles of Inheritance and Variation Question 175
175. One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of $F_2$ progenies that mutation is found in
[2004]
(a) one-third of the progenies
(b) none of the progenies
(c) all the progenies
(d) fifty percent of the progenies
Show Answer
Answer : b
Hints & Solution
(b) Mitochondrion is an organelle present in the cytoplasm. A zygote receives its cytoplasm from the female parent gamete. Hence in the given question, the $F_2$ progeny receive the mitochondrial genome from the female parent, so mutation is not passed to progeny.
