Which of the following human conditions is inherited as an X linked recessive trait?
Correct answer: A. Red green colour blindness
- A. Red green colour blindness
- B. Sickle cell anaemia
- C. Down syndrome
- D. Albinism
Explanation
The genes for red and green pigments lie on the X chromosome, so colour blindness follows the X linked pattern. Sickle cell anaemia and albinism are autosomal recessive, and Down syndrome is a chromosome number disorder, not a single gene trait.
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About Mendel's Laws of Inheritance
Mendelian inheritance explains how alleles separate into gametes and assort during reproduction, producing predictable genotype and phenotype ratios. Questions cover dominance, recessiveness, homozygous and heterozygous conditions, the laws of segregation and independent assortment, monohybrid and dihybrid crosses, test crosses and the limits caused by linked genes.
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