AP BIOLOGY

LABORATORY REVIEW

MITOSIS AND MEIOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Through the process of meiosis, sex cells are produced that are
A
unique with a full set of genetic information.
B
unique with a half set of genetic information.
C
identical with a full set of genetic information.
D
identical with a half set of genetic information.
Explanation: 

Detailed explanation-1: -Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information. These cells are our sex cells – sperm in males, eggs in females.

Detailed explanation-2: -Genetic variation is increased by meiosis Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occurs during prophase I.

Detailed explanation-3: -The other type of cell division, meiosis, ensures that humans have the same number of chromosomes in each generation. It is a two-step process that reduces the chromosome number by half-from 46 to 23-to form sperm and egg cells.

Detailed explanation-4: -Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction.

Detailed explanation-5: -Answer and Explanation: Meiosis produces cells with half the chromosomes to maintain genetic integrity in the offspring. During sexual reproduction a sperm and egg combine to make a new cell called a zygote. During this process of fertilization the genomes of the sperm and egg fuse.

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