CELL DIVISION
MEIOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Half of the individual’s nuclei descend from the nucleus of the father’s gamete.
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Half of the individual’s cells descend from the father’s gamete.
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It was passed to the individual by somatic cell from the father.
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It was passed to the individual by a gamete from the father.
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Detailed explanation-1: -Q. Why is approximately 50% of any individual’s DNA inherited from that individual’s father? Half of the individual’s cells descend from the father’s gamete. Half of the individual’s nuclei descend from the nucleus of the father’s gamete.
Detailed explanation-2: -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-3: -Sutton demonstrated that the number of chromosomes was reduced in spermatozoan cell division, a process referred to as reductive division. As a result of this process, each gamete that Sutton observed had one-half the genetic information of the original cell.
Detailed explanation-4: -The sperm and egg are specialised cells called gametes and are unique in comparison to most of the other cells in the body, as they only contain half the usual number of chromosomes. At fertilisation, half of your father’s genome is mixed with half of your mother’s genome to form your complete genome.
Detailed explanation-5: -The autosomes (chromosomes 1–22) are passed down equally from each parent; one copy from each parent. Therefore, a parent and a son or daughter would share 50% of their autosomal DNA.