BIOLOGY 1M03 Lecture Notes - Lecture 2: In Situ Hybridization, Wild Type, Radiocarbon Dating

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greybeetle959

18 Feb 2015

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Lecture 2/3/4 - chapter 24: evolution by natural. Darwin and wallace went a major step farther and proposed that change in. Darwin described evolution as descent with modification, meaning that change. This means that species: 1 change through time 2 are related by common. Fossils - many fossils provide evidence for extinct species, those that are no. Evidence of evolution (change through time, extinction, vestigial traits, Evidence of natural selection (industrial melanism, antibiotic resistance, Natural selection affects individuals, but evolution occurs in population. 1. species over time is based on natural selection acting on heritable variation among individuals. 2. over time produced modern species from ancestral species - genetic basis for phenotypes changes over time. 8. been discovered with traits that are intermediate between earlier and later species - examples include limb development and loss, feathers and flight, upright posture and brain size in humans, jaws in vertebrates etc.

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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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BIOLOGY 1M03 Lecture Notes - Lecture 2: In Situ Hybridization, Wild Type, Radiocarbon Dating

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