Sentences with phrase «result by natural selection»

This indicates that parallel adaptation to similar environments may lead to the same result by natural selection, yet this evolution can proceed along different evolutionary genetic routes.

Not exact matches

So the real questions are: 1) how can there even be a universal understanding of «right» and «wrong» without a creator 2) how can purely random genetic mutations preserved by natural selection have resulted in the desire to do «right» even amongst those that do not believe in life after death?

This may happen, both by virtue of damage done to the chromosomal structure and as a result of keeping alive the offspring of human specimens with poor genetic endowment who otherwise would have, by natural selection, died before reaching childbearing age.

your video (apparently done by some high school kid) is self refuting, it's premise is that — mutations exist in a population, — drastic environmental change dramatically favors one set of mutations — this natural selection is then what results in «rapid change»

DNA coding is affected by the environment via adaptation; DNA specific structure is unpredictable from biochemistry / physics alone but is environmentally determined over generations (via natural selection)-- resulting in the white fur of the polar bear, for example.

Our results show that male competition is a key driver of speciation — by a factor that is five times greater than results on which other, more - traditional theories of natural selection causing speciation are based.»

If life today is the result of evolution by natural selection, Darwin realized, then even the most complex systems in biology must have emerged gradually from simple precursors, like someone crossing a river using stepping - stones.

Although this natural gene drive is unpredictable and scattershot, Burt showed that certain tricks of molecular biology could achieve the same results: causing a gene to be inherited by many more organisms through many generations than standard genetics and natural selection allow.

Our results suggest that gene dosage is an adaptive trait that confers phenotypic plasticity among natural Leishmania populations by rapid down - or upregulation of transporter proteins to limit the effects of environmental stresses, such as drug selection.

The antagonistic pleiotropic theory first proposed by Williams in 1957 states that aging is the result of the natural selection of many genes with pleiotropic function that benefit the young but will have an adverse effect later in life.

In reality, hunter - gatherers were unbelievably skilled (a point also made by Jared Diamond in his classic Guns, Germs and Steel, in which, if I recollect correctly, he makes a compelling case that as a result of natural selection and their environment, the indigenous people of Papua New Guinea are, on average, more intelligent than so called «first world *» inhabitants).

Island dwarfism is thought to result from intense natural selection caused by evolutionary pressures of living on islands (e.g., increased competition for limited resources)[43].