Q.

Chromosorne designation of Turner sydrorne is :

A. 44A+XO
B. 44A+XXX
C. 44A+XXY
D. 44A+XYY
Answer» A. 44A+XO
Explanation: Turner syndrome is a rare chromosomal disorder characterized by partial or complete loss (monosomy) of one of the X chromosomes that affects females. Individuals with Turner syndrome have only 45 chromosomes, including just a single X chromosome. This monosomic has a chromosome complement of 44 autosomes and one X chromosome (44+XO). The abnormal condition probably originates from exceptional egg or sperm with no X chromosome.
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