Biology Illinois Edition (Glencoe Science)
Biology Illinois Edition (Glencoe Science)
7th Edition
ISBN: 9780078759864
Author: Alton Biggs
Publisher: MCG
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Concept explainers

DNA and RNA
Deoxyribonucleic acid (DNA) is usually called the blueprint of life. Deoxyribose is a monosaccharide that has a key function in the synthesis of deoxyribonucleic acid. One less oxygen-containing hydroxyl group occurs in deoxyribose sugar. Nucleic acid, d…
DNA as the Genetic Material
DNA, or deoxyribonucleic acid, is a long polymeric nucleic acid molecule discovered in the late 1930s. It is a polymer; a long chain-like molecule made up of several monomers connected in a sequence. It possesses certain characteristics that qualify it a…
Genetics
The significant branch in science which involves the study of genes, gene variations, and the organism's heredity is known as genetics. It is also used to study the involvement of a gene or set of genes in the health of an individual and how it prevents …
DNA Replication
The mechanism by which deoxyribonucleic acid (DNA) is capable of producing an exact copy of its own is defined as DNA replication. The DNA molecules utilize a semiconservative method for replication.
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Chapter 16, Problem 36A
Summary Introduction

To explain: Reason for studying the evolution of modern humans by using mitochondrial DNA instead of nuclear DNA.

Introduction: Evolution is the change in traits of a species over generations, which is mainly dependent on the natural selection.

Expert Solution & Answer
Check Mark

Explanation of Solution

Mitochondrial DNA is inherited only from the mother. It does not change much over time and humans living today have identical mitochondrial DNA. According to scientists, Allan Wilson and Rebecca Cann, this happens because the population with the most variation should be the population that has had the longest time to accumulate diversity, which as exactly the trait found in mitochondrial DNA of Africans. This study also suggested that modern man or H. sapiens evolved in Africa about 2,00,000 years ago.

Conclusion

Mitochondrial DNA is used to study the evolution of modern humans because unlike nuclear DNA, it does not mutate or changes very little over time.

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Chapter 16 Solutions

Biology Illinois Edition (Glencoe Science)

Ch. 16 - Prob. 1ACh. 16 - Prob. 2ACh. 16 - Prob. 3ACh. 16 - Prob. 4ACh. 16 - Prob. 5ACh. 16 - Prob. 6ACh. 16 - Prob. 7ACh. 16 - Prob. 8ACh. 16 - Prob. 9ACh. 16 - Prob. 10A
Ch. 16 - Prob. 11ACh. 16 - Prob. 12ACh. 16 - Prob. 13ACh. 16 - Prob. 14ACh. 16 - Prob. 15ACh. 16 - Prob. 16ACh. 16 - Prob. 17ACh. 16 - Prob. 18ACh. 16 - Prob. 19ACh. 16 - Prob. 20ACh. 16 - Prob. 21ACh. 16 - Prob. 22ACh. 16 - Prob. 23ACh. 16 - Prob. 24ACh. 16 - Prob. 25ACh. 16 - Prob. 26ACh. 16 - Prob. 27ACh. 16 - Prob. 28ACh. 16 - Prob. 29ACh. 16 - Prob. 30ACh. 16 - Prob. 31ACh. 16 - Prob. 32ACh. 16 - Prob. 33ACh. 16 - Prob. 34ACh. 16 - Prob. 35ACh. 16 - Prob. 36ACh. 16 - Prob. 37ACh. 16 - Prob. 38ACh. 16 - Prob. 39ACh. 16 - Prob. 40ACh. 16 - Prob. 41ACh. 16 - Prob. 42ACh. 16 - Prob. 43ACh. 16 - Prob. 1STPCh. 16 - Prob. 2STPCh. 16 - Prob. 3STPCh. 16 - Prob. 4STPCh. 16 - Prob. 5STPCh. 16 - Prob. 6STPCh. 16 - Prob. 7STPCh. 16 - Prob. 8STPCh. 16 - Prob. 9STPCh. 16 - Prob. 10STPCh. 16 - Prob. 11STPCh. 16 - Prob. 12STPCh. 16 - Prob. 13STPCh. 16 - Prob. 14STPCh. 16 - Prob. 15STP

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