L41 BIOL 2970 Lecture Notes - Lecture 36: Coronary Artery Disease, Mayo Clinic, Cholesterol

23 views4 pages

violetwhale222

29 Nov 2017

School

WUSTL

Department

Biology And Biomedical Sciences

Course

L41 BIOL 2970

Professor

Ian Duncan

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Mayo clinic study -- post-mortem data on odds of coronary artery disease. C-h = high cholesterol, c-m = medium cholesterol, c-l = low cholesterol. Allele 3 is most common in the population. The results of looking at both the environmental and the measured genotypes and how they interact can give more useful information on risk for a disease than measuring either of the two alone. Population-genetic measure of evolution -- change in allelic frequency in the gene pool. Evolutionary forces in populations -- factors or processes that can change the frequency of an allele in the gene pool a. Mutation: causes many small changes -- critical for introducing new alleles into a population. N = number of individuals in the population. Genetic drift: finite population size causes evolutionary change (sampling error -- random change) Property 1: no direction -- equally likely to increase or decrease the frequency.

Related Questions

Random, chance events that change allele frequencies are knownas:

A. Gene flow

B. Genetic drift

C. Natural selection

D. Balancing selection

Flag this Question

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

Flag this Question

Question 31 pts

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

Flag this Question

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

Flag this Question

Question 51 pts

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

True

False

Flag this Question

Question 61 pts

Genetic evidence suggests that humans and Neandertals neverinterbred.

True

False

Flag this Question

Question 71 pts

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

True

False

Flag this Question

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

Flag this Question

Question 91 pts

Patterns of evolution can be seen above the species level

True

False

Flag this Question

Question 101 pts

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