Question
Which of the following disorders is caused by
nondisjunction of sex chromosomes?Solution
Turner syndrome is a genetic disorder caused by the nondisjunction (failure of chromosomes to separate properly) of sex chromosomes during meiosis. It results in a monosomy (45, X), where affected individuals have only one X chromosome instead of two (XX in females). It occurs only in females and leads to symptoms such as short stature, underdeveloped ovaries, and infertility. (1) Cystic fibrosis – An autosomal recessive disorder caused by mutations in the CFTR gene (not related to sex chromosomes). (2) Hemophilia – A sex-linked recessive disorder caused by mutations in clotting factor genes on the X chromosome, but not due to nondisjunction. (4) Sickle cell anemia – A single-gene mutation disorder affecting hemoglobin, inherited in an autosomal recessive pattern, not due to sex chromosome nondisjunction.
Which of the following type of mouth parts present in house fly?
Pyricularin produced by Pyricularia oryzae causes:
Maximum amount of rice is produced in which state in India?
The most commonly used method of depreciation is
In May 2021, which country successfully achieved landing of unscrewed spacecraft on Mars?
What is the main cause of the physiological disorder known as "Tirak" or "bad boll opening" in cotton?
Which was the very initial act in India that provides the protection from adulteration/contamination of food that may lead to the health risk of consume...
In which stage of cotton growth are flowering and boll formation considered critical for irrigation?
Conversion of ADP to ATP is known as:
Technology in which plants are grown without soil is known as: