Question

hemophilia is a sex-linked recessive trait. make a punnett square for a male parent that has hemophilia and a female parent that is a carrier. use x⁺ for normal and xʰ for hemophilia.

Explanation:

Step1: Identify parental genotypes

Male (hemophilia): $X^hY$; Female (carrier): $X^HX^h$

Step2: Set up Punnett square rows/columns

Male gametes: $X^h$, $Y$; Female gametes: $X^H$, $X^h$

Step3: Fill Punnett square combinations

Top-left: $X^H \times X^h = X^HX^h$
Top-right: $X^H \times Y = X^HY$
Bottom-left: $X^h \times X^h = X^hX^h$
Bottom-right: $X^h \times Y = X^hY$

Answer:

	$X^H$	$X^h$
$Y$	$X^HY$	$X^hY$

(To map to the dropdowns:
Top left box dropdowns: $X^HX^h$
Top right box dropdowns: $X^HY$
Bottom left box dropdowns: $X^hX^h$
Bottom right box dropdowns: $X^hY$)