Essential Genetics 6th Edition by Daniel Hartl

Exercise 1

Classify each of the following mutant alleles as a celllineage mutation, a homeotic mutation, or a pair-rule mutation.
(a) A mutant allele in C. elegans in which a cell that normally produces two daughter cells with different fates gives rise to two daughter cells with identical fates.
(b) A mutation in Drosophila that causes an antenna to appear at the normal site of a leg.
(c) A lethal mutation in Drosophila that results in abnormal gene expression in alternating segments of the embryo.