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describe stabilizing selection, directional selection,and disruptive selection, and identify which ones may beresponsible for the long periods of stasis observed in the fossilrecord

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Lelia Lubowitz
Lelia LubowitzLv2
28 Sep 2019

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Related questions

How do stabilizing and disruptive selection differ?

1.With stabilizing selection, the phenotype for a trait does not influence survival. With disruptive selection, the phenotype for a trait affects survival.

2. Stabilizing selection reduces the amount of variation in a trait. Disruptive selection increases the amount of variation in a trait.

3.With stabilizing selection, extreme individuals have high biological fitness. With disruptive selection, extreme individuals have low biological fitness.

4.Stabilizing selection produces adaptation. Disruptive selection is nonadaptive.

Please give an example for each and describe. Thank you!

1.) Describe what happensto the mean and variance of a trait under directional, stabilizing,and disruptive selection. Give one (real, not hypothetical) exampleof each.

1. the general trend in population density, supported across such diverse groups as mammals, fish, and invertebrates, shows that as organisms size_____ population density ______

2. in arboreal lizards short tails are less useful in balancing while traversing branches, but long tails increase susceptibility to predators. A moderate (average) tail length is therefore preferable. this is an example of: A. disruptive selection B. directional selection C. stabilizing selection D. balanced selection E. natural selection.

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