Question

A researcher has carried out Giesma staining on a set of human chromosomes, and has arranged these chromosomes into a karyotype. She notices that in a homologous pair, a band is missing from one of the chromosomes. This likely resulted from:
A. a deletion.
B. a duplication.
C. an inversion.
D. a reciprocal translocation.
E. either a deletion or a reciprocal translocation.

Answer 1

Answer:

The correct answer will be option-E

Explanation:

A karyotype is a cytogenetical representation which is related to the visual appearance of the chromosome present in a cell. The karyotype helps to determine the total number of chromosomes in the cell as well as represent the abnormalities in the chromosomes.

If a band is missing from the karyotype chromosome could be due to the loss of the chromosome segment through deletion or through the reciprocal translocation in which the chromosomes are unusually rearranged chromosome segment.

Thus, option-E is the correct answer.