EVERYDAY SCIENCE

Detailed explanation-1: -To form a fetus, an egg from the mother and sperm from the father come together. The egg and sperm each have one half of a set of chromosomes. The egg and sperm together give the baby the full set of chromosomes. So, half the baby’s DNA comes from the mother and half comes from the father.

Detailed explanation-2: -Since each gamete gets one of two possible versions of a chromosome, by random chance, two unlinked genes will be inherited together 50% of the time. Unlinked genes may be on different chromosomes, or so far apart on the same chromosome that they are often separated by recombination.

Detailed explanation-3: -Mitosis: Cell division in Asexual Reproduction. 2 Daughter cells exactly like the parent. Heredity is passed to offspring: 100% DNA from 1 parent.

Detailed explanation-4: -Egg and sperm cells have just 23 chromosomes each. That’s half as many chromosomes as regular cells. Through the process of fertilization, egg and sperm join to make a cell with 46 chromosomes (23 pairs), called a zygote. For each chromosome pair, one homologous chromosome came from each parent.