The apterous gene in Drosophila encodes a protein required for wing patterning and growth. It is also known to function in nerve development, fertility, and viability. When human and mouse genes whose protein products closely resemble apterous were used to generate transgenic Drosophila, the apterous mutant phenotype was rescued. In addition, the whole-body expression patterns in the transgenic Drosophila were similar to normal apterous.

A) What is meant by the term rescued in the context?

B) What do these result indicate about the molecular nature of development?

is also known to function in nerve development, fertility, and viability. When human and mouse genes whose protein products closely resemble apterous were used to generate ... [USA] 96: 2165-2170), the apterous mutant phenotype was rescued ... patterns in the transgenic Drosophila were similar to normal apterous.

Explanation:

It is also known to function in nerve development, fertility, and viability. When human and mouse genes whose protein products closely resemble apterous were used to ... patterns in the transgenic Drosophila were similar to normal apterous ... for normal wing patterning and growth whereas mutation in the gene (apterous ... is also known to function in nerve development, fertility, and viability. When human and mouse genes whose protein products closely resemble apterous were used to generate ... [USA] 96: 2165-2170), the apterous mutant phenotype was rescued ... patterns in the transgenic Drosophila were similar to normal apterous.