Question

In Karyogram, sex chromosomes should placed at the end, but exception is-

• A. Drosophila
• B. Homo sapiens
• C. Pisum
• D. Ginkgo

Answer 1

The correct option is A Drosophila

The graphical representation of a karyotype is known as a karyogram. A karyotype describes the chromosome count of an organism, position of centromeres, banding patterns, and homologous pairs paired arranged according to size. Each chromosome is paired with its homologous chromosome are an exact match in size and structure,even if it carries different alleles. These chromosome pairs or autosomes are numbered according to size. The sex chromosomes, X and Y, even if they are smaller in size are placed at the end. Karyograms, help in studying the chromosomal aberrations, taxonomic relationships and evolutionary events.