AP BIOLOGY

Detailed explanation-1: -The transmission to successive generations of traits that are due to alleles at gene loci on a sex chromosome is called as sex-linked inheritance. 2. In mammals, the female is homogametic, with two X chromosomes (XX), while the male is the heterogametic sex, with one X and one Y chromosome (XY ).

Detailed explanation-2: -X-linked recessive conditions most often occur in males. X-linked recessive inheritance is a way a genetic trait or condition can be passed down from parent to child through mutations (changes) in a gene on the X chromosome.

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: -Biologically female people inherit an X chromosome from their father, and the other X chromosome from their mother. Biologically male people always inherit their X chromosome from their mother.