LABORATORY REVIEW
MITOSIS AND MEIOSIS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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23
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46
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92
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2
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Detailed explanation-1: -In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46.
Detailed explanation-2: -Sex cells have one set of chromosomes; body cells have two.
Detailed explanation-3: -In other words, gametes have only 23 chromosomes (referred to as the haploid number (1n). Meiosis, then, is the process by which specialized diploid stem cells in the ovary (oogonia) and testes (spermatogonia) produce eggs and sperm which have a haploid number of chromosomes.
Detailed explanation-4: -Humans are diploid, and most of the body’s cells contain 23 chromosomes pairs. Human gametes (egg and sperm cells), however, contain a single set of chromosomes and are said to be haploid.
Detailed explanation-5: -Answer and Explanation: It is important that human sperms and eggs have only 23 chromosomes because this way when fertilization occurs, it will form one full diploid cell, which will then divide via mitosis to form a full organism.