Biology: Life on Earth with Physiology (11th Edition)
Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 10, Problem 3MC
Summary Introduction

Introduction:

The stage of crossing over involves the recombination of the regions of the chromosome leading to the exchange of the segments or the genes during cell division. It occurs during the stage of meiosis- I inside the cell.

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Crossing over usually contributes to genetic variation by exchanging chromosomal segments between:   A. nonhomologous loci of the genome (E) autosomes and sex chromosomes.   B. chromatids of nonhomologous chromosomes   C. non-sister chromatids of homologous chromosomes   D. sister chromatids of a chromosome   E. polyploid chromosomes
Using the symbols above: 1. Given: Adult diploid cell (2n = 8) 2. Show the condition of the chromosomes in the following Mitosis phases (illustrate):                 a. prophase                 b. metaphase                 c. anaphase                 d. telophase/cytokinesis
Match each term with its description Chromatid Chromosome + Chromatin Homologous chromosomes Sister chromatids A. "Chromosome pairs inherited from each parent. Chromosomes pairs with same shape, same size and same genes. " B. One of the two identical copies making a chromosome C. Chromatids product of DNA duplication D. Single piece of chromatin tightly packed DNA with proteins E. Loosely-packed DNA with proteins
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Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY