Question

What results in a mutation where one chromosome might have two copies of a gene and another chromosome has no copy of the gene at all?

A) Duplication mutation
B) Deletion mutation
C) Inversion mutation
D) Substitution mutation

Answer 1

A duplication mutation results in one chromosome having two copies of a gene and the other chromosome having no copies of the gene.

Step-by-step explanation:

The mutation where one chromosome might have two copies of a gene and another chromosome has no copy of the gene at all is called a duplication mutation.

In a duplication mutation, a segment of DNA is repeated, creating a longer chromosome with multiple copies of the gene.

This type of mutation can have significant effects on an organism's phenotype and can lead to genetic disorders.