Natural and Artificial Selection 1.3 Flashcards
Mutations
Changes in the DNA of an organism
What will happen if mutation happen in the body cell? Somatic?
It will not get passed down to the offspring
What will happen if mutation happen in the gamete?
It will get pass down to the offspring
What will create genetic diversity?
Mutation
Selective advantage?
A genetic advantage of one organism over their competitors
Natural selection
The useful trait of one organism will get pass down to the rest of the species over time.
Adaptation
Structural, behavior or physiological process that help an organism to survive.
Speciation
When a new species is formed from an existing population
What cause speciation?
Geographic barriers
What is mutagen?
A substance or an event that boost the rate of mutation
What is Carcinogen?
A mutagen that will cause cancer
What is some physical mutagen
Ultraviolet radiation, xrays
What is some chemical mutagen
Nitrates, gasoline fumes
Artificial selection
Selective pressure by humans on population in order to improve or modify desirable traits.
what is adaptive radiation
when environment changes, organisms go through adaptive radiation. Common ancestors split into different species.
