Question

In Baltimore Bob cats a rare mutation in a mitochondrial gene causes both diabetes and deafness. A female cat with the mutation is mated to a male cat without the condition.

A. What proportion of the female offspring will inherit this trait? ____________

B. What proportion of the male offspring will inherit this trait? _____________

Answer 1

Answer :-

A. What proportion of the female offspring will inherit this trait? _____all female offspring_______

B. What proportion of the male offspring will inherit this trait? ------- all male offspring----

Explanation :-

During fertilisation only female ova contribute mitochondria along with all other oragnalles whereas sperm cell only contribute it's haploid genome.

Therefore mitochondrial mutations are only pass from mother to her offspring without specific gender involvment

Therefore in given example where a mother has mutations in her mitochondria will transmit the condition to her offspring.