Explain the genetic basis of sex determination and inheritance patterns, including autosomes, sex chromosomes, and homologous pairs.

• Lindwe is a female, so her genotype is $\text{XX}$.
• The father is a male, so his genotype is $\text{XY}$.

Parents: $\text{XX}$ (Lindwe) $\times$ $\text{XY}$ (Father)

Gametes from Lindwe: $\text{X}$, $\text{X}$
Gametes from Father: $\text{X}$, $\text{Y}$

• Possible offspring genotypes: $\text{XX}$ (female), $\text{XY}$ (male).
• From the Punnett square, 2 out of 4 possible outcomes are $\text{XY}$ (male).
• Percentage chance of a boy: $\frac{2}{4} \times 100\% = 50\%$.
• \boxed{\text{50%}}