AP BIOLOGY

Detailed explanation-1: -Males will always inherit an X-linked trait from their mother (they inherit a Y chromosome from their father) Females cannot inherit an X-linked recessive condition from an unaffected father (must receive his dominant allele)

Detailed explanation-2: -X linked Recessive Inheritance A male with an affected allele on his single X chromosome is hemizygous and can not transmit the disorder to their male offsprings, but all his daughters would be obligate carriers. Healthy heterozygous carrier females pass the disorder to affected sons.

Detailed explanation-3: -X-linked recessive inheritance refers to genetic conditions associated with mutations in genes on the X chromosome. A male carrying such a mutation will be affected, because he carries only one X chromosome. A female carrying a mutation in one gene, with a normal gene on the other X chromosome, is generally unaffected.

Detailed explanation-4: -In humans, the alleles for certain conditions (including some forms of color blindness, hemophilia, and muscular dystrophy) are X-linked. These diseases are much more common in men than they are in women due to their X-linked inheritance pattern.

Detailed explanation-5: -Turner syndrome can cause a variety of medical and developmental problems, including short height, failure of the ovaries to develop and heart defects.