How do organisms grow and develop?

Growth and development of living organisms are not the same things.

In multicellular organisms individual cells grow and then divide via a process called mitosis, thereby allowing the organism to grow.

Explanation:

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

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the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.