Question

Name the phenomenon that leads to situations like ‘XO’ abnormality in humans. Also name this genetic disorder. How are individuals with an XO chromosomal abnormality affected? Write its symptoms as well as karyotype.

Answer 1

1. Phenomenon Leading to XO Abnormality: Turner Syndrome is the condition that results in an XO chromosomal aberration. This happens when one X chromosome instead of two is present due to a missing or incomplete second sex chromosome.
2. Symptoms of XO Chromosomal Abnormality: Short stature, infertility, heart disorders, kidney issues, and learning disabilities are common in people with Turner syndrome. Additionally, they usually do not develop secondary sexual traits like breast growth.
3. Karyotype: Turner syndrome patients have a karyotype of 45, X, meaning they have one X chromosome rather than two sex chromosomes and a total of 45 chromosomes rather than the standard 46.