Blue cone monochromacy is an:
Correct answer: A. X - linked recessive trait
- A. X - linked recessive trait
- B. Autosomal trait
- C. X - linked dominant trait
- D. Y - linked trait
Explanation
Yes, blue cone monochromacy (BCM) is an X-linked recessive trait. This means that the gene for BCM is located on the X chromosome, and only males are affected because they only have one X chromosome. Women, on the other hand, have two X chromosomes, so they need to inherit two copies of the mutated gene in order to be affected.
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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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