AP BIOLOGY

CELL DIVISION

MEIOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which explains the significance of meiosis in the development of gametes?
A
Meiosis produces identical daughter cells.
B
Meiosis reduces the chromosome number by one-half.
C
Meiosis combines an egg and a sperm to form a zygote.
D
Meiosis increases the number of offspring an organism can produce.
Explanation: 

Detailed explanation-1: -Meiosis is important for three main reasons: it allows sexual reproduction of diploid organisms, it enables genetic diversity, and it aids the repair of genetic defects.

Detailed explanation-2: -Meiosis is sometimes called “reduction division” because it reduces the number of chromosomes to half the normal number so that, when fusion of sperm and egg occurs, baby will have the correct number.

Detailed explanation-3: -Anaphase I of meiosis is characterized by separation of homologous chromosomes. This leads to reduction in chromosome number to half of that present in the mother cell.

Detailed explanation-4: -When two gametes come together at fertilization, the normal amount of chromosomes results. Gametes are produced by a special type of cell division known as meiosis. Meiosis contains two rounds of cell division without DNA replication in between. This process reduces the number of chromosomes by half.

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