A trait determined by a gene on the X chromosome is said to be:
Correct answer: B. Sex-Linked
- A. Pseudoautosomal
- B. Sex-Linked
- C. Both A & B
- D. None of the Above
Explanation
Option A: Pseudoautosomal: Refers to a region on the X and Y chromosomes where they share genetic material, but a trait determined by a gene on the X chromosome is not considered pseudoautosomal. Option B: Sex-Linked: A trait determined by a gene on the X chromosome is called sex-linked. It means the gene is located on the sex chromosome and is inherited differently in males and females. Option C Both A & B: Incorrect because pseudoautosomal and sex-linked are distinct concepts. A gene on the X chromosome cannot be both pseudoautosomal
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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