they result in a longer lifespan
they are caused by mutations of the X chromosome
they are linked to an unknown chromosome
they are disorders that affect only women
Answer:
they are caused by mutations of the X chromosome
Explanation:
The X chromosome contains many genes in addition to those that determine sex. Certain hereditary defects determine by recessive genes are linked to the X chromosome. The disorders are caused by mutations of the X chromosomes.
True
False