which allele combination represents a female who is a carrier for an x - linked recessive disorder?\n○…

which allele combination represents a female who is a carrier for an x - linked recessive disorder?\n○ $x^{r}x^{r}$\n○ $x^{r}x^{r}$\n○ $x^{r}y$\n○ $x^{r}y$

which allele combination represents a female who is a carrier for an x - linked recessive disorder?\n○ $x^{r}x^{r}$\n○ $x^{r}x^{r}$\n○ $x^{r}y$\n○ $x^{r}y$

Answer

Brief Explanations:

A female carrier for an X - linked recessive disorder has one normal allele and one recessive allele on her X - chromosomes. Females have two X - chromosomes (XX), and males have one X and one Y chromosome (XY). The notation $X^R$ represents the normal allele and $X^r$ represents the recessive allele. A carrier female has the genotype $X^R X^r$.

Answer:

A. $X^R X^r$