Cell Respiration 9. This indicates that Y chromosomes have been evolving at a much faster rate than the X and all other chromosomes. Sex-influenced or sex-conditioned traits are phenotypes affected by whether they appear in a male or female body. The Y chromosome has few genes, but the X chromosome has more than 1, High School Chemistry: The current estimate of sequenced X-linked genes is and the total including vaguely defined traits is B the affected mother is heterozygous with one copy of the X-linked dominant allele:
What are some examples of sex-linked traits?
Her son Leopold had the disease and died at age 30, while her daughters were only carriers. In humans, as well as in many other animals and some plants, the sex of the individual is determined by sex chromosomes. Who are you? The second reason for female rarity is that women who express the mutation must have two X chromosomes that carry the trait and they necessarily got one from their father, who would have also expressed the trait because he only had one X chromosome in the first place. Archived from the original on 20 October Color blindness is carried on the X chromosome, and it shows up more commonly in men than in