BIOL 1000 Lecture Notes - Lecture 44: Selective Breeding, Natural Selection, Biogeography

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erinchimpanzee657

13 May 2017

School

University of Manitoba

Department

Biological Sciences

Course

BIOL 1000

Professor

Kevin G.Scott

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Document Summary

During wet years, smaller beaks are more efficient. Another example: insects adaptation due to pesticide production . The study of fossils provides strong evidence for evolution. In addition to basing theory off of evidence from artificial selection and comparisons of geographic distribution of species and different structures of species, darwin also relied on fossil record . Fossils document differences between past and present organisms . Hard parts of an animal that are rich in minerals (bones/teeth/shells) may remain as fossils . Many fossils are replicas of organisms (dead organism captured in sediment decays and leaves empty mould, later filled by minerals dissolved in water) . Fossil record = sequence in which fossils appear within layers of sedimentary rocks . Provides some of the strongest evidence for evolution. Relative age of fossils can be determined by which layer/strata they are found in . Not all organisms live in areas that favour fossilization.

Related Questions

23.

Peter and Rosemary Grantâs research on Darwinâs finches demonstrated that dry years on the Galapagos Island Daphne Major favored deep beaks in the medium ground finch (Geospiza fortis) and that very wet years favored narrow beaks. In years that were neither wet nor dry (intermediate years), many different types of foods were available, and birds with intermediate beak sizes were favored. Immediately following an intermediate year, average beak size in G. fortis is expected to be

A) narrower than after a wet year and wider than after a dry year.

B) wider than after a wet year and narrower than after a dry year.

C) the same as after a wet year and wider than after a dry year.

D) the same as after a dry year and narrower than after a wet year.

13.

Select the evidence that would support the hypothesis that peppered moths and industrial melanism are an example of evolution by natural selection. Check all that apply.

A) Different color morphs exist naturally in the peppered moth population.

B) The genetic basis of melanism in peppered moths is unknown.

C) Dark moths are recaptured more in polluted areas than light moths.

D) Birds looking for food often miss moths that are the same color as the mothâs background.

Check all of the statements that are supported by studies of artificial selection.

A) Artificial selection shows that evolutionary change can occur over a short time.

B) Artificial selection shows that natural selection is capable of producing major evolutionary change.

C) Artificial selection occurs when humans selectively breed individuals of a species with desirable traits.

D) Artificial selection results only in minor changes within a species.

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BIOL 1000 Lecture Notes - Lecture 44: Selective Breeding, Natural Selection, Biogeography

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