4.1 Vocabulary Flashcards
What is a Variation?
Visible or invisible differences between individuals.
What is a Adaptation?
A variation that gives a survival advantage to an individual.
What is a Mutation?
Changes in the genetic material (DNA) of an ecosystem.
What happens during Selective Advantages?
What happens is that it increases the offspring’s chances of survival.
What happens during Selective Disadvantages?
What happens is that it reduces the offspring’s chances of survival.
What is Natural Selection?
The process whereby the characteristics of a population of organisms change over time because individuals with certain heritable traits survive specific local environmental conditions and, through reproduction, pass on their traits to their offspring.
What is Sexual Selection?
Selecting characteristics based on attracting a mate.
What is Selective Pressure?
Environmental condition or conditions that select for certain characteristics of individuals and select against others.
What is a Mutagen?
Something that causes an increased rate of mutation.
What is Biological Species?
A group of reproductively compatible populations.
