Question

Place these genes in their temporal order of expression from earliest to latest during Drosophila development.

A. Bicoid, Gap, Homeotic
B. Homeotic, Gap, Bicoid
C. Homeotic, Bicoid,Gap
D. These genes are not expressed at different times during development. They are expressed at the same time, but in a different spatial order.
E. Kruppel, gooseberry, even-skipped

Answer 1

The correct order of gene expression during Drosophila development is Bicoid, Gap, Homeotic.

Step-by-step explanation:

The correct order of gene expression during Drosophila development is Bicoid, Gap, Homeotic (option A).

Bicoid is one of the first genes to be expressed during Drosophila development. It is involved in establishing anterior-posterior polarity in the embryo.

The Gap genes are expressed after Bicoid and play a role in defining broad regions of the embryo.

Homeotic genes are expressed later and determine the identity of specific segments and body parts.

Therefore, the correct temporal order of expression is Bicoid, Gap, Homeotic.