Question 7 of 15 Resources Humans with only one sex chromosome (XO) usually have underdeveloped sexual characteristics and are sterile. What is this condition called? O Androgen-insensitivity syndrome O Klinefelter syndrome O Lyon hypothesis O Nondisjunction O Turner syndrome Question Source: Pierce 6e - Genetics: A Conceptual
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Complete each sentence with the appropriate term. Not all terms will be used.
Madhur L.
Kaela P.
Humans who have aneuploidy of the sex chromosomes are viable. A female human who has Turner syndrome (XO) has one too few X chromosomes and will produce a normal amount of proteins from genes on autosomes. A person who is XO has one X chromosome. A Barr body will not form. Most X chromosome genes produce a normal amount of protein. The few genes in the PAR region of the X chromosome remain active on all copies of the X chromosome. With Turner syndrome, those genes produce less protein in somatic cells than normal, leading to skeletal abnormalities. The Barr body is normally reactivated. In individuals with Turner syndrome, the lower dose of X chromosome gene expression in the female germ line leads to defective oogenesis and infertility.
Marlyn J.
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