New York State Chemistry RegentsNew York State Earth Science Regents

Living Environment Regents August 2010 Question 34 PDF Print E-mail
NYS Living Environment Regents August 2010

Correct answer: (2) meiosis

Structure X represents an ovum, the female gamete of humans. Gametes divide by meiosis, which is a two-stage type of cell division in sexually reproducing organisms that results in gametes with half the chromosome number of the original cell.

Incorrect answer:

(1) mitosis

Mitosis is another type of cell division in eukaryotic cells conventionally divided into the growth period and another four stages. These stages maintain the chromosome number by equally allocating replicated chromosomes to each of the daughter cells. Only meiosis occurs in sex cells or gametes, except for plants.

(3) recombination

Genetic recombination occurs during prophase I of meiosis, specifically during the chromosomal crossover of homologous chromosomes

(4) cloning

Cloning is the process of producing an individual organism with the same genetic makeup with another individual.

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