Question

In Drosophila, a developmental mutation called ssa (spineless aristapedia) results in flies with mini leg parts on the antennae. What kind of gene is this mutation

Answer 1

Given our understanding of genetics, we can confirm that the gene in question is of the homeotic type.

What is a gene?

• In biology, we refer to a gene as the most basic unit of genetic information.
• It is a segment of DNA that encodes for a certain trait that may or may not be expressed.
• A gene carries the information for a specific trait, for example:

             1) Eye color

             2) Body organization

             3) Height

What does it mean for a gene to be homeotic?

• In the case of this question, the gene in question is a homeotic gene.
• Homeotic genes are those that are in charge of the organization of the organism's body.
• These genes control the general pattern of the body, such as where the arms and legs will be, and so on.

Therefore, given the definition of a homeotic gene, we can confirm that this is the type that best fits the description of the mutation in the question since it affected the formation and normal organization of the body.

To learn more about homeotic genes visit:

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