A bell curve in which you have a large amount of averages, but small amount on each extreme.
What is Normal distribution
100
Acts to eliminate individuals with certain traits from a population
What is Natural selection
100
A change over time
What is Evolution
100
Physical characteristic that can be observed
What is a Phenotype
100
chosing a mate for a particular trait
What is Sexual Selection
200
The "peak" of a normal distribution moves to one direction or another
What is Directional Selection
200
Chance events can cause rare alleles to be lost from one generation to the next, especially when populations are small.
What is Genetic Drift
200
The movement of individuals into and out of a population
What is Migration
200
The actual allele combinations
What is a Genotype
200
Either self-fertalize or mate with other like themselves. Occurs when a poulation small and tend to increse the rate of homozygotes
What is Inbreeding
300
The bell curve shape becomes narrower.
What is Stabilizing Selection
300
Occurs when genes are added to or removed from a population. Can be caused by migration.
What is Gene Flow
300
The formation of a new species
What is Speciation
300
examples: TT or tt
What is homozygous
300
Creates chance to recombine alleles and thus increase variation in a population.
What is Sexual Reproduction
400
acts to eliminate individuals with average phenotype values and instead makes the extremes more prominent
What is Disruptive Selection
400
any limits or preferences of mate choice
What is Nonrandom Mating
400
When gene are allele frequencies of a population remain stable
What is Genetic Equilibrium
400
describes an allele that is fuly expressed whenever the allele is present in an individual
What is Dominant allele
400
Any population has an array of individuals that differ slightly from one another in genetic makeup
What is Variation
500
The ratio of the intermediate phenotypes increase.
What is Stabilizing Selection
500
Can add a new allele to a population.
What is Mutation
500
The study of the frequency and interaction of alleles and genes in a population
What is Population Genetics
500
An alternative form of a gene that governs a characteristic
What is an Allele
500
What Charles Darwin proposed to be a mechanism that could drive evolution. The mechanism makes teh frequency of an allele increase or decrease depending on the allele's effects on survival and reproduction.