Darwin's belief of natural selection is based on the fact that all species of life evolved over time from a common ancestors. He believed that certain traits were passed on over time that helped with adaption, these variations helped with the struggle for existence.
Dawkins however believed in the survival of the stable. The most stable molecules will continue to grow into large molecules and eventually create cells. Cells are the start of an individual organism. Dawkins believed that natural selection involved replicators and those replicators created the genes we have today. Some genes were however discarded because the contained mutations.
The idea of sexual selection is shared by both Darwin and Dawkins. Sexual selection can favor the evolution of traits that enhance a male's success in reproduce. Parental care is very important, parents can either chose to take care of their offspring already in the world or choose to have more offspring. Sexual selection is based on traits that a female favors from one male to another male. In the end, the female has all the control over who she mates with.
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I took Dawkins words in a different way. I understud that both female and males find an optimal compromise between the cost of their gametes, and the benefits of parental investment towards the survival of thir own genes present in their offspring.
ReplyDeleteOctober, 13th post response
ReplyDeleteDear Kelly,
I also think that Darwin meant that "Natural Selection" is in addition to evolution from a common ancestor is that when species mate they will hopefully pass on the more favorable traits to their offsprings in the future at the time of their lives, in order for the species to evolve better ESS strategies, mating preferences, and structure. As far as "Sexual Selection" by either Dawkins or Darwin is not only for females' but male's too. Male's also have sexual preferences which has been more limited than "female choice", but never the less they too have some sexual selection pressures on the females that they copulate with too.
I agree with Guadalupe, I'm not quite sure if Dawkins view on sexual selection was centered on the survival of the stable. I took it as opposite sexes being selfish when mating and reproducing.
ReplyDeleteI agree with what you are saying but I think that both parents want to enhance their reproductive abilities. And also I agree with Guadalupe and Carlos with sexual selection being centered on the survival of the stable. Other than that it was very good.
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