Solutions For An Introduction to Genetic Analysis Chapter 3 Problem 34P

7177-3-34P AID: 2975 | 20/03/2013

A mutant stp exhibits stop-and-start growth in Neurospora. Since the site of the mutation is known to be in mitochondrial DNA (deoxyribonucleic acid) we can expect maternal inheritance.

For the first cross, we use a stp strain as the mother and a wild type plant as the father to get progeny. All the progeny will have the mutation of stop-and-start growth since they will inherit the mutated gene from their mother.

Parents:

Progeny: all stp

In the reciprocal cross, we use a wild type female as the mother and a stp strain as the father. All the progeny will be normal and will not exhibit the mutation since the mother does not have the stp mutation.

Parents:

Progeny: all wild type.