Read Sex and the Origins of Death

Sex and the Origins of Death

William R. Clark

4.9/5 (22316 ratings)

Description:Why death? Is death an inextricable consequence of life? If not, where did death come from? In Sex and the Origins of Death, William R. Clark looks at life and death at the level of individual cells to address questions such as why we age, why cells die, and why sex and death seem to go hand in hand. Why must we die? To shed light on this question, Clark reaches far back in evolutionary history, to the moment when "inevitable death" (death from aging) first appeared. For cells during the first billion years, death, when it occurred, was accidental; there was nothing programmed into them that said they must die. But fierce competition gradually led to multicellular animals - size being an advantage against predators - and with this change came cell specialization and, most important, germ cells in which reproductive DNA was segregated from the DNA used to operate individual cells. When sexual reproduction evolved, it became the dominant form of reproduction on the planet, in part because mixing DNA from two individuals generates altogether new germline DNA. During this process, most mutations that have crept into the germline are corrected. But this does not happen in the other (somatic) cells of the body; the mutations are not corrected, and continue to accumulate. The somatic cells become, from a genetic point of view, both superfluous and dangerous. Nature's solution to this dilemma, Clark concludes, was programmed death - the somatic cells must die. Unfortunately, we are the somatic cells. Death is necessary to exploit to the fullest the advantages of sexual reproduction.We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Sex and the Origins of Death. To get started finding Sex and the Origins of Death, you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.

Pages: —

Format: PDF, EPUB & Kindle Edition

Publisher: —

Release: —

ISBN: 0198026609

Description: Why death? Is death an inextricable consequence of life? If not, where did death come from? In Sex and the Origins of Death, William R. Clark looks at life and death at the level of individual cells to address questions such as why we age, why cells die, and why sex and death seem to go hand in hand. Why must we die? To shed light on this question, Clark reaches far back in evolutionary history, to the moment when "inevitable death" (death from aging) first appeared. For cells during the first billion years, death, when it occurred, was accidental; there was nothing programmed into them that said they must die. But fierce competition gradually led to multicellular animals - size being an advantage against predators - and with this change came cell specialization and, most important, germ cells in which reproductive DNA was segregated from the DNA used to operate individual cells. When sexual reproduction evolved, it became the dominant form of reproduction on the planet, in part because mixing DNA from two individuals generates altogether new germline DNA. During this process, most mutations that have crept into the germline are corrected. But this does not happen in the other (somatic) cells of the body; the mutations are not corrected, and continue to accumulate. The somatic cells become, from a genetic point of view, both superfluous and dangerous. Nature's solution to this dilemma, Clark concludes, was programmed death - the somatic cells must die. Unfortunately, we are the somatic cells. Death is necessary to exploit to the fullest the advantages of sexual reproduction.We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Sex and the Origins of Death. To get started finding Sex and the Origins of Death, you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.

Special Offer | $0.00

Special Offer! | $0.00

Sex and the Origins of Death

Sex and the Origins of Death

More Books

Petrodollar Warfare: Oil, Iraq and the Future of the Dollar

Petrodollar Warfare: Oil, Iraq and the Future of the Dollar

In Defense of Self: How the Immune System Really Works

In Defense of Self: How the Immune System Really Works

A Means to an End: The Biological Basis of Aging and Death by William R. Clark (1999-01-01)

A Means to an End: The Biological Basis of Aging and Death by William R. Clark (1999-01-01)

Confederate Veteran Magazine Nov - Dec 2006 (William R. Clark - First Confederate Soldier Killed in the War)

Confederate Veteran Magazine Nov - Dec 2006 (William R. Clark - First Confederate Soldier Killed in the War)

A History of the Councils of the Church Volume 1; To the close of the Council of Nicea, A.D. 325, tr. from the German, and ed. by William R. Clark

A History of the Councils of the Church Volume 1; To the close of the Council of Nicea, A.D. 325, tr. from the German, and ed. by William R. Clark

A history of the Christian councils : from the original documents / by Charles Joseph Hefele ; translated from the German and edited by William R. Clark. Volume v.1 1896 [Leather Bound]

A history of the Christian councils : from the original documents / by Charles Joseph Hefele ; translated from the German and edited by William R. Clark. Volume v.1 1896 [Leather Bound]

A history of the Christian councils : from the original documents / by Charles Joseph Hefele ; translated from the German and edited by William R. Clark. Volume v.4 1896 [Leather Bound]

A history of the Christian councils : from the original documents / by Charles Joseph Hefele ; translated from the German and edited by William R. Clark. Volume v.4 1896 [Leather Bound]

Murder on Tour: A Rock'n'roll Mystery by William R Clark (1989-01-06)

Murder on Tour: A Rock'n'roll Mystery by William R Clark (1989-01-06)

At War Within: The Double-Edged Sword of Immunity

At War Within: The Double-Edged Sword of Immunity