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When the most reproductively successful individuals include those with trait values that are extremely high AND those that are extremely low, this is...

This question was answered on Jan 28, 2013. View the Answer
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When the most reproductively successful individuals include those with trait values that are extremely high AND those that  are extremely low, this is called _______ selection. Question 1 options: artificial directional disruptive stabilizing Save Question 2  (1 point) When the extremes of a population contribute relatively few offspring to the next generation as compared to average  members of the population, this is called _______ selection. Question 2 options: disruptive directional corrective stabilizing Save Question 3  (1 point) In a West African finch species, birds with large or small bills survive better than birds with intermediate-sized bills. This  situation is an example of _______ selection. Question 3 options: directional stabilizing  corrective disruptive Save Question 4  (1 point) Low birth weight babies die of infectious disease more easily than high birth weight babies. High birth weight babies are  more difficult to deliver, which can also lead to early deaths. Because of these two factors, human birth weight is under… Question 4 options: directional selection for high birth weight. directional selection for low birth weight. stabilizing selection. disruptive selection. Save Question 5  (1 point)
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Some traits, called “quantitative” traits, vary continuously among individuals, rather than falling into discrete categories. Such  traits are… Question 5 options: not heritable. influenced by the environment instead of by genes. influenced by many genetic loci. heterozygous Save Question 6  (1 point) If a particular piece of DNA (a gene) exists in several different variants in a population, these variants are called ___. Question 6 options: genotypes phenotypes loci alleles Save Question 7  (1 point) Genetic drift is evolutionary change resulting from… Question 7 options: chance differences in reproductive success. natural selection. differences in individuals’ fit to their environment. mutation. Save Question 8  (1 point) A key point in Darwin's explanation of evolution is that. .. Question 8 options: the biological structures most likely inherited are those that have become better suited to the environment through  constant use. extinction is nature’s way of weeding out undeserving organisms. small variations among individuals significantly affect the chance that a given individual will survive in its environment  and be able to reproduce. mutations occur in order to help future generations fit into their environments. Save
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8425131 Explanations.docx

1. Disruptive selection is a type of natural selection that selects against the average individual in
a population. The makeup of this type of population would show phenotypes of both extremes,
but...

This question was asked on Jan 27, 2013 and answered on Jan 28, 2013.

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