Week 2: Genetic Drift/ Inbreeding and Population/quantitative genetics

What type of selection is graph one?

What type of selection is graph 2?

What type of selection is the last graph?

Antibiotic resistance is an example of directional selection

Stabilizing selection _______________ the mean trait value and reduces variation in the trait.

[blank_start]Stabilizing[blank_end] selection maintains the meant trait value and [blank_start]reduces[blank_end] the variation in the trait.

Disruptive selection occurs when the tails of the distribution are not favored over the intermediate phenotypes.

What type of selection is this?

Genetic drift, gene flow, and mutation pressures are other ways in which evolution may occur.

Genetic drift, gene flow, and mutation pressures only enhance selection.

Genetic drift isn't Darwinian evolution, correct?

A fixed allele, with a frequency of 1, is the only allele in that population.

Label the Y axis

Why type of evolution can get a population from point X to point Y?

Immigration is always good.

Horizontal gene transfer is when genes from one species are introduced into another organism compared to vertical (parent to offspring) transmission.

Horizontal gene transfer....

Modern [blank_start]Synthesis[blank_end] demonstrated that [blank_start]natural[blank_end] selection operating on Mendelian variation could lead to rates of evolutionary changes that explain historical patterns of evolution.

What equation allows evolution to be documented and qualified? [blank_start]HW[blank_end]

Hardy-Weinberg Theroem serves as a null hypothesis for whether evolution is occurring in a population. It assumes...

HW assumptions are important because any [blank_start]violation[blank_end] is a way that [blank_start]evolution[blank_end] can occur.

If a difference of frequency is found between the actual and expected alleles/genotypes, then evolution has occurred/

You should practice the math questions at the end of this powerpoint.