Evolution and Common Ancestry
Only living things _________ over time. Non-living things just change over time.
evolve
Triple points and point donation
This is the term that refers to changes that occur to an organism's DNA.
mutations
Members of families share _____________ that lived in the past and so do species that are related.
common ancestors.
The movement of organisms between populations
gene flow
Traits that help an organism to survive and reproduce
adaptations
Double points
Evolution occurs because species' ______ (instructions) changes over time and so do their ______________.
DNA,
environments
When individual organisms choose who to mate with based on specific traits
non-random mating/sexual selection
Double points
1. This is the process by which humans guide evolution by only allowing members of a species with desirable traits to reproduce.
2. Name a species that has undergone this evolutionary process.
1. artificial selection
2. dogs, cats, any plant or animal on a farm
Siblings' common ancestors =
Cousins' common ancestors =
parents,
grandparents
_____________ are more likely to evolve because they are more vulnerable to changes in their environment.
Small populations
The passing down of traits from parents to offspring
heredity
The more ___________ that different species share, the more __________ their common ancestor lived.
similarities,
recently
natural selection