General Biology

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jimslady
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General Biology

Post by jimslady » Tue Dec 14, 2004 1:27 am

How do each of these factors contribute to natural selection?
A. Fertility of individuals in a population is high
B. Environmental resources are limited
C. Not all members of the population survive to reproduce
D. Individuals in a population vary in their characteristics

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biostudent84
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Post by biostudent84 » Tue Dec 14, 2004 3:48 am

A. More offspring means more individuals to select from.
B. The strongest individuals will compete the best, the weakest not surviving.
C. Only the strongest live to maturity to reproduce.
D. More vairation...more to select from.

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thank.darwin
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Re: General Biology

Post by thank.darwin » Thu Jan 27, 2005 9:00 pm

How do each of these factors contribute to natural selection?
A. Fertility of individuals in a population is high- more competion over food
B. Environmental resources are limited- the ones that can collect it the best and the smaller members of a species would survive
C. Not all members of the population survive to reproduce- the ones that die don't pass on their genes
D. Individuals in a population vary in their characteristics- survival of the fittest
- thank.darwin
Last edited by thank.darwin on Mon Jan 31, 2005 7:36 pm, edited 1 time in total.

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Post by Wojahoitz » Mon Jan 31, 2005 4:05 am

How do each of these factors contribute to natural selection?

A. The more individual organisms of the population are produced the better the chances are that are a perfect (or at least improved) organism will result.

B. Less resources mean more competition over the few that exist. More competition means the stronger should come out on top eliminating the weaker from the population therefore preventing their genes from being passed on.

C. As before the stronger more evolved organisms will live to reproduce with the weakest being removed from the gene pool.

D. This is the essence of evolution. The organisms, upon conception, mutate, the genes combine producing differing characteristics. Sometimes these characteristics suit the organism and its environment, thus it is selected. Sometimes the characteristics do not suit its environment and it is eliminated.

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