Answer:
If a gene in humans is located on sex chromosomes, then the father would pass his allele to either male or female child.
Step-by-step explanation:
The father is able to pass his allele to both male and female child but a mother can pass her allele only to female child.
Father has two chromosomes- one is X chromosome and the other one is Y chromosome.
While a mother has two X chromosome.
When one X- chromosome from mother and another X-chromosome from father combine, they form a daughter with genotype XX. Thus, the allele of father associated with X-chromosome are passed on to the female offspring
In the same manner when Y-chromosome of father and X-chromosome of mother combine, they form a son with genotype XY. Thus, the allele of father associated with Y-chromosome are passed on to the male offspring.
Hence,If a gene in humans is located on sex chromosomes, then the father would pass his allele to either male or female child.