Human Evolution

What are selection preassures?

organisms that are better adapted are more likely to survive and then pass on their better features/adaptations

Types of selection pressures?

Stabilising, directional, disruptive

Population

Group of species in a particular location

Selection Advantages

Organisms w/ better phenotypes have an advantage in survival and passing on genes

Gene Pool

total collection of alleles in a population

Evolution definition

Genetic modification over time

Species definition

A group of individuals who are able to breed with each other and create viable and fertile offspring.

alleles

an alternative form of a gene

genome

all the DNA/genes in a cell

Mutations

responsible for introducing new alleles into a population via changes to DNA.

New source for genetic variation and are evolutionarily significant.

mutagen

an agent that can cause mutations in DNA

How allele frequencies change due to selection pressures