The genes that you inherit from your parents affect your whole life, determining aspects of both your physical appearance and personality.
- Human egg and sperm cells contain 23 single chromosomes.
- Egg and sperms cells combine to make diploid cells containing 23 pairs of chromosomes.
- Each parent cells contributes half of your genetic make-up and determines your sex and other traits.
- In egg and sperm cells, parents provide variants of gene coding for the same proteins, which are known as alleles.