Which term describes the position of a gene on a chromosome? A: Centromere B: Genotype C: Locus D: Phenotype A man who is red-green color-blind marries a woman who is neither color-blind nor a carrier of this trait. Which statement best describes their probable offspring? A: All of their sons would be color-blind. B: All of their children would be color-blind. C: 50 percent of their sons would be color-blind. D: None of their children would be color-blind, but all of their daughters would be carriers.
Biology · Middle School · Sun Jan 24 2021
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1.The term that describes the position of a gene on a chromosome is C: Locus.
2.Regarding the probability of offspring for a man who is red-green color-blind marrying a woman who is neither color-blind nor a carrier of this trait:
The condition of red-green color blindness is caused by a recessive gene located on the X chromosome. Men have only one X chromosome (XY), while women have two X chromosomes (XX). In this scenario:
The man who is color-blind carries the recessive gene for color blindness on his X chromosome.
The woman is neither color-blind nor a carrier, meaning she does not carry the recessive gene for color blindness on either of her X chromosomes.
The probable outcome for their offspring:
C: 50 percent of their sons would be color-blind.