BIOL-K - Biology BIOL-K 103 Lecture Notes - Lecture 2: Assortative Mating, Genotype Frequency, Allele Frequency

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mauvetiger346

30 Jan 2020

School

IUPUI

Department

BIOL-K - Biology

Course

BIOL-K - Biology BIOL-K 103

Professor

Dr.Yost

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Document Summary

Objective 1: define, compare and contrast, and give examples of microevolution: nonrandom mating (inbreeding, assortative mating), mutation, genetic drift (bottleneck effect and founder effect), and gene flow (knowledge/comprehension/analysis) Population is balanced but because we are changing the frequency and moving away from the balance those changes will pass through the entire population. Groups of people selected for hair color, eye color, etc. Genotype frequency changes at loci involved in mate choice (only specific change is at this loci) Individual are more closely related than if chosen randomly from general population. We are selecting for or against a specific characteristic we want to see in animals. We can ave selective breeding programs that result in different breed by not a different species. Overall fitness may change (increase, decrease, or stay the same) Only mutation in reproduce (germ) cells are inherited. If this was not true, lamarck would be right. In genetic drift random events change allele frequency.

Related Questions

Random, chance events that change allele frequencies are knownas:

A. Gene flow

B. Genetic drift

C. Natural selection

D. Balancing selection

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Question 21 pts

What type of selection acts to maintain the two extremephenotypic variants in a population?

A. Disruptive selection

B. Directional selection

C. Positive selection

D. Artificial selection

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Question 31 pts

Approximately, how much of our DNA is shared with our closestrelatives, chimpanzees?

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Question 41 pts

The large canines of male baboons are likely the result of________, while the fact that some male baboons are very colorfulis probably the result of _______.

A. Mutation; balancing selection

B. Gene flow; sexual dimorphism

C. Male competition; female choice

D. Mate choice; genetic drift

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Question 51 pts

Negative assortative mating results in an increased frequency ofhomozygous genotypes within a population.

True

False

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Question 61 pts

Genetic evidence suggests that humans and Neandertals neverinterbred.

True

False

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Question 71 pts

The specific variant of the FOXP2 gene associated with languageacquisition in humans is found in both humans and Neandertals.

True

False

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Question 81 pts

Industrial melanism describes the change in moth color from paleto dark after pollution from factories resulted in coating treetrunks with a layer of dark soot. Which statement is trueconcerning industrial melanism?

A. After pollution levels increased, all moths became darkercolored because soot got on their wings

B. The dark moths survived better after pollution levelsincreased because they were not poisoned by the pollutants

C. Individual moths changed their color in response to thepollution

D. Dark moths were present in the population before pollutionlevels increased

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Question 91 pts

Patterns of evolution can be seen above the species level

True

False

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Question 101 pts

Inbreeding is problematic because it increases the probabilitythat offspring inherit two copies of a recessive mutation thatcauses disease.