Biology · Variation and Genetics
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Which of the following is an example of an X-linked recessive trait in humans?
- A
Hypophospatemic Rickets
- B
Color Blindness
- C
Baldness
- D
Beard Growth
The gene responsible for color blindness is located on the X chromosome. In other words, red-green color blindness is an X-linked recessive condition. If a female inherits one normal color vision gene and one mutated gene, she won't be red-green color blind, because it's a recessive trait.
Incorrect. This condition is actually X-linked dominant, not recessive. It leads to low phosphate levels and affects bone development.
The gene responsible for color blindness is located on the X chromosome. In other words, red-green color blindness is an X-linked recessive condition. If a female inherits one normal color vision gene and one mutated gene, she won't be red-green color blind, because it's a recessive trait.
Incorrect. Baldness (androgenetic alopecia) is a complex trait influenced by multiple genes and hormones, not solely X-linked.
Incorrect. Beard growth is primarily influenced by hormones like testosterone and is not determined by a single X-linked gene.
Tagged under Biology · Variation and Genetics · 2011