Evolution by Natural selection does not change the characteristics of the individual but of the population.True or false.
2007-03-23 10:37:14 · 11 answers · asked by vanessa velasquez 1 in Science & Mathematics ➔ Biology
True!
The individual does not change (evolve). (The individual dies with exactly the same genes it was born with.)
The *population* changes (evolves). (The general tendency for individuals with characteristics that are better "fit" to the environment, to pass those very characteristics on to their offspring in greater numbers ... causes the characteristics in the *population* to change over time.)
Natural selection is a STATISTICAL process.
2007-03-23 11:11:13 · answer #1 · answered by secretsauce 7 · 6⤊ 2⤋
An adaptation is a positive characteristic of an organism that has been favored by natural selection. The concept is central to biology, particularly in evolutionary biology. The term adaptation is also sometimes used as a synonym for natural selection,[citation needed] but most biologists discourage this usage. Adaptation is the change in organisms that allow them to live successfully in an enviroment Structural adaptations; Structural adaptations are special body parts of an organism that help it to survive in its natural habitat (e.g., skin colour, shape, body covering). Behavioural adaptations are special ways a particular organism behaves to survive in its natural habitat Physiological adaptations; Physiological adaptations are systems present in an organism that allow it to perform certain biochemical reactions (e.g., making venom, secreting slime, being able to keep a constant body temperature). Selection; In the context of evolution, certain traits or alleles of a species may be subject to selection. Under selection, individuals with advantageous or "adaptive" traits tend to be more successful than their peers reproductively--meaning they contribute more offspring to the succeeding generation than others do. When these traits have a genetic basis, selection can increase the prevalence of those traits, because offspring will inherit those traits from their parents. When selection is intense and persistent, adaptive traits become universal to the population or species, which may then be said to have evolved Factors fostering selection include limits on resources (nourishment, habitat space, mates) and the existence of threats (predators, disease, adverse weather). Fitness may mean: The state of being physically active on a regular basis to maintain good physical condition. now u know weather development of an individual upon face of earth nead adaption and fitness
2016-03-29 01:21:20 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Natural Selection changes the allele frequency of the population. Natural selection does not cause evolution though. No new alleles(characteristics) arise out of Natural selection. Evolution refers to the individual rather then the population.
2007-03-23 12:50:25 · answer #3 · answered by RcJones 2 · 1⤊ 1⤋
Absolutely true. You see, changes can only occur in populations over time, not just a little change in one organism of a population. For instance, if there are 1000 rabbits with white fur and 4 rabbits of that group have brown fur, that is NOT natural selection. That is simply chance that 4 rabbits have brown fur...it could be a genetic flaw or just a little genetic variation, and nothing more. If, however, out of 1000 rabbits, 800 of them have brown fur, and those rabbits in continuing populations have mostly brown fur (in a time span of 100 years or more...that'd be many rabbit populations), then that is natural selection. The change of whatever sort has to happen to MOST of the population over TIME.
Hope I help!
2007-03-23 12:38:26 · answer #4 · answered by Misscheerios2 6 · 1⤊ 0⤋
it's true, natural selection affects the populatin of a specias
2007-03-23 10:43:36 · answer #5 · answered by Anonymous · 2⤊ 0⤋
Well it does change each individual. The population will also be changed over time, but each individual will be changed. I guess the first individual to be changed would not be as a result of natural selection, but they will get changed
2007-03-23 10:46:37 · answer #6 · answered by MLBfreek35 5 · 0⤊ 6⤋
Secretsauce has hit the nail on the head, again.
2007-03-23 13:07:52 · answer #7 · answered by Anonymous · 1⤊ 0⤋
False
2007-03-23 11:01:43 · answer #8 · answered by ebiyedinak 3 · 0⤊ 7⤋
True
2007-03-23 10:40:18 · answer #9 · answered by Anonymous · 3⤊ 0⤋
True.
Secretsauce has answered completely and correctly, so give him the coveted "Best Answer."
2007-03-23 11:40:38 · answer #10 · answered by Anonymous · 3⤊ 2⤋