BMEN 515 Lecture Notes - Allele Frequency, Genotype Frequency, Population Genetics

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amberkangaroo332

26 Feb 2013

School

University of Calgary

Department

Biomedical Engineering

Course

BMEN 515

Professor

William Huddleston

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Document Summary

Darwin developed the major features of an explanatory theory for evolutionary change based on two major propositions: species are not immutable; they change over time, the process that produces these changes is natural selection. Darwin also observed that, although offspring ten to resemble their parents, the offspring of most organisms are not identical to one another or to their parents. He suggests that slight variations among individuals affect the chances that a given individual will survive and reproduce. Natural selection: differential contribution of offspring to the next generation by various genetic types belonging to the same population. A population is a group of individuals of a single species that live and interbreed in a particular geographic area at the same time. Refers both to the processes by which characteristic that appear to be useful to their bearers evolve and to the characteristics themselves.

Related Questions

1. Traits don't necessarily have to be passed on from parent to offspring for natural selection to act on them; traits that are environmentally acquired during the life time of an individual (such as practicing to become very strong or very fast) can also be acted upon by natural selection. Select one: True or False

2.Within the same species and even within the same population, not all individuals are the same. They vary in size, shape or other traits.

Select one:

True

False

3.Differential reproductive success means that some individuals in a population leave more offspring that survive and reproduce relative to other individuals in a population.

Select one:

True

False

coraldolphin670

What is NOT a requirement for evolution by natural selection to occur?

a) Traits must be inherited

b) Traits must influence reproductive success

c) Inherited traits must have variation within the population

d) Characteristics that are favored (fitness) relate to the immediate environment

e) Variations will appear that will allow the survival of the species in future, unforeseen, circumstances.

Charles Darwin...

a) ... arrived at the idea of natural selection in the GalÃ¡pagos Islands.

b) ... was the first scientist to suggest evolution.

c) ... claimed that only aggressive and strong individuals would survive and reproduce.

d) ... with Alfred Wallace, published a mechanism for adaptive change, natural selection, and proposed a "tree of life".

e) ... argued that chimpanzees and gorillas were progressively evolving into human beings.

Describe the theory of natural selection Which of thefollowing BEST describes the theory of natural selection? CHOOSEONE

	1 The genetic make-up of apopulation gradually changes from one generation to the next.
	2 Living organisms change overtime.
	3 Each species produces many moreoffspring than can survive long enough to reproduce. The offspringthat do survive contain genes that are inherited from theparents.
	4 There is variation among themembers of a species. Some of this variation is geneticallydetermined and so can be passed on to future generations.
	5 Some individuals have genes thatincrease their chances for survival and reproduction. Theseindividuals are more likely to reproduce and pass on their genes,causing their genes to become more common in the nextgeneration.
	6 There is a struggle for existenceamong the members of a population.

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BMEN 515 Lecture Notes - Allele Frequency, Genotype Frequency, Population Genetics

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