Choose the best description of the relationship between survival of the fitness and natural selection
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Choose the best description of the relationship between survival of the fitness and natural selection
Charles Darwin introduced the key biological idea of natural selection. It explains how species change over time as a result of the differential survival and reproduction of individuals with beneficial features. In essence organisms that are more adapted to their environment have a higher chance of surviving and passing on their genes to the following generation which causes species to gradually evolve and adapt to their surroundings. The evolution theory is based on this mechanism.
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- Natural and sexual selection both lead to evolution, but these processes can work against each other. Differentiate between these two forms of selection and give an example of a situation where natural selection reduces mate choice and sexual selection reduces survival.Explain the Fundamental Theorem of Natural Selection FisherWhich of the following is NOT one of Darwin's postulates? Individuals in a population will have different versions of phenotypic traits Individuals in a population will vary in how successful they are with respect to survival and reproduction Some phenotypic traits can be passed from parent to offspring Individuals change in response to the environment, and pass those changes on to the next generation
- Sexual and Ecological selection often oppose each other: give 2 examplesSuppose there is a deleterious mutation in some human gene that causes loss of function very late in life. Which of the following statements is LEAST supported? Selection against this mutation is weak The equilibrium frequency of this mutation will depend on its mutation rate The mutation affects fitness but not senescence Selection against this allele depends on extrinsic mortality.Both Charles Darwin and Alfred Russel Wallace acknowledged the influence of the economist Thomas Malthus in the development of their ideas about natural selection. Specifically, Malthus's ideas about geometric population growth implied that: only the largest and strongest individuals would survive survival of the fittest resources in every generation would be limited organisms should have as many offspring as possible organisms should have a few, very fit offspring who can compete for scarce resources