Biology: The Unity and Diversity of Life
Biology: The Unity and Diversity of Life
15th Edition
ISBN: 9780357093795
Author: STARR
Publisher: CENGAGE LEARNING (CUSTOM)
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Chapter 12, Problem 2SQ
Summary Introduction

Introduction: Cell division is the process where cells divide to produce two or more daughter cells. There are mainly two types of cell division, namely mitosis and meiosis. Mitosis involves the division of a single cell into two identical daughter cells. Meiotic division is a type of division that occurs in a cell that typically lessens the number of chromosomes present in its parent cell by half. A diploid parent cell (2n) is used for the production of four haploid (n) daughter cells. Meiotic division mainly occurs in the reproductive cells (egg and sperm). When the haploid sex cells fuse together to form a distinct cell, it restores the diploid condition of the cell (zygote). There are two phases of meiosis – meiosis I and meiosis II.

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In humans, sexual reproduction that produces an embryo, which then develops into a fetus, requires: a. Neither mitosis or meiosis b. Mitosis c. Both mitosis and meiosis
Meiosis explains whya. you inherited half of your DNA from each of your parents.b. the sister chromatids in a chromosome are identical to each other.c. each of your somatic cells contains the same DNA.d. zygotes contain half as much DNA as somatic cells.
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