Question

what factor(s) determine(s) the sex of a child?

• genotype alone
• hormones alone
• environmental factors alone
• genotype and hormones
• genotype, hormones, and environmental factors

Explanation:

In humans, the sex of a child is determined by the combination of sex chromosomes inherited from parents. Females contribute an X chromosome, while males contribute either an X or Y chromosome. If the sperm carries an X chromosome, the child will be female (XX genotype); if it carries a Y chromosome, the child will be male (XY genotype). This is purely a genetic (genotype) determination. Hormones and environmental factors do not alter the sex determined by the genotype at conception.

Answer:

genotype alone