Principles of Biology
Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 18, Problem 9TY
Summary Introduction

Introduction:

Genes are the basic functional and physical unit of heredity. The genes make up the genetic makeup of an individual, which is responsible for the development of the whole organism and its traits.

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Which of the following are true statements about the human genome? (Select ALL that are true) The human genome contains 23 pairs of chromosomes The human genome is one circular chromosome The human genome contains about 100,000 genes The human genome contains about 20,000-25,000 genes
Which of the following best describes the relationship between DNA, genes, and chromosomes? a- Genes are pieces of DNA. Chromosomes are genes held together by centromeres. b- Genes are made of DNA and chromosomes. c- Chromosomes are made of DNA. Multiple chromosomes are found in a single gene d- A chromosome is single molecule of DNA. A gene is a specific region of DNA on a chromosome.
Genes that are duplicated within a genome and later diverge in function, such as the RNASE1 and RNASE1B genes in a species of monkeys, are described as -Derived genes -ancestral genes -orthologous genes -paralogous genes
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Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY