During organ differentiation in Drosophila, an organ is modified to another organ (such as wings may be replaced by legs). Genes responsible for such metamorphosis are called

Options

A. double dominant genes
B. plastid genes
C. complementary genes
D. homeotic genes

Answer

D

Explanation

Homeotic genes are control genes which either be getting expressed or by remaining silent during development, influence the differentiation of organs.
These have been found in insectsn one nematode and some plants. A DNA sequence called homeobox, present in these genes, is involved in specification of organs.
A mutation that causes a body part to develop in appropriate position in an organism, is called homeotic mutation, e.g. in Drosophila, such mutation may cause legs to develop on the head in place of antennae.