You will want to eat more then usual and you gain weight.
Answer: Structural changes can occur during the formation of egg or sperm cells, in early fetal development, or in any cell after birth. Pieces of DNA can be rearranged within one chromosome or transferred between two or more chromosomes.
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D. He should perform rehabilitation exercises, because he his body has gone 3 weeks without the same routine, and therefore he may be more vulnerable to injury.