Question

The chromosomal abnormality in which a fragment of a chromosome breaks off and then reattaches to the original chromosome in the same place but in the reverse direction is called __________.

Answer 1

Answer:

Inversion.

Explanation:

Chromosomal mutation may be defined as the mutation that change the structure of the chromosome and may alter its number. Different types of chromosomal aberration are deletion, duplication, inversion and translocation.

The chromosomal inversion is the chromosomal rearrangement or the chromosome segment may get  reversed. The fragment chromosome gets break off and then the segment gets join to the original chromosome but in the reverse condition.

Thus, the answer is inversion.