Question

The type of Down syndrome that occurs because a section of chromosome 21 attaches to another chromosome is an example of a genetic disorder caused by

A) chromosome translocation.
B) chromosome deletion.
C) a frame shift mutation.
D) a recessive allele.

Answer 1

Answer: A) Chromosome translocation

Explanation: Chromosome translocation is caused when material is exchanged between two chromosomes or part of one chromosome becomes fused onto another chromosome. Some human disorders are caused by chromosome translocation, such as cancer, infertility, and translocation Down syndrome.

Answer 2

A) chromosome translocation.