By Thomas N. Sherratt, David M. Wilkinson
Why will we age? Why cooperate? Why accomplish that many species have interaction in intercourse? Why do the tropics have such a lot of species? while did people begin to impact international weather?
This e-book presents an creation to a number of basic questions that experience taxed evolutionary biologists and ecologists for many years. the various phenomena mentioned are, on first mirrored image, easily difficult to appreciate from an evolutionary point of view, when others have direct implications for the way forward for the planet. the entire questions posed have a minimum of a partial resolution, all have visible intriguing breakthroughs lately, but a number of the reasons stay hotly debated.
Big Questions in Ecology and Evolution is a curiosity-driven ebook, written in an obtainable manner that allows you to entice a vast viewers. it's very intentionally no longer a proper textual content booklet, yet anything designed to transmit the buzz and breadth of the sector by way of discussing a few significant questions in ecology and evolution and the way they've been spoke back. it is a ebook geared toward informing and encouraging anyone with an curiosity in ecology and evolution. It finds to the reader the great scope of the sphere, its basic significance, and the intriguing breakthroughs which have been made lately.
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Additional info for Big Questions in Ecology and Evolution (Oxford Biology)
When the somatic boat is sinking, it may be a better option to put one’s energy into releasing the germ-line lifeboats (which Why Do We Age? 23 have been far better protected and capable of selective screening) than attempting to plug the hole. Extending life What does all of this mean for the prospect of life extension? Williams5 was in no mood to pull his punches when he explored the implications of his ‘antagonistic pleiotropy’ theory, assuming that such pleiotropic genes would be common: ‘This conclusion banishes the “fountain of youth” to the limbo of scientiﬁc impossibilities where other human aspirations, like the perpetual motion machine .
Note also that generally the sex chromosomes that inﬂuence gender do not recombine, especially if they are different in size. the haploid state but the haploid form still has to be generated from the diploid form at some point in the sexual life cycle). Meiosis is rather strange because, despite the fact that it is all about halving chromosome numbers, its ﬁrst stage is a replication of chromosomes (Fig. 2), seemingly making the problem worse rather than better. There is good reason for this, and indeed many researchers consider events at this stage crucial to understanding why sex evolves at all.
110 The very possibility that ageing can effectively be sent into reverse is a fascinating prospect. Continued growth after reproductive maturity may well explain several cases of this negative senescence. 110 New directions will also need to be taken. While much research has been done on sources of damage, far less has been done to investigate the mechanisms that bring about repair. As noted earlier, some structures may be irreparable no matter how much energy and resources you throw at the problem, while sometimes the repair mechanisms themselves may break down, and it is important to explore the implications of this fact—there must be limits on the extent of selection to repair faulty repair mechanisms.
Big Questions in Ecology and Evolution (Oxford Biology) by Thomas N. Sherratt, David M. Wilkinson