If a chromosome fragment breaks off and then reattaches to the original chromosome but in the reverse direction, the resulting chromosomal abnormality is called a(n)
A) deletion.
B) inversion.
C) translocation.
D) reciprocal translocation.

Question

Quizplus · Accepted Answer

When a chromosome fragment breaks off and reattaches in the reverse direction, it results in an inversion. This means that the genes on that portion of the chromosome are now in a different order and orientation than they were before the inversion. This can potentially disrupt gene function and lead to genetic disorders. A deletion occurs when a portion of the chromosome is lost, while translocation and reciprocal translocation involve the swapping of genetic material between different chromosomes.

If a Chromosome Fragment Breaks Off and Then Reattaches to the Original