Evolution Flashcards
The process of change overtime
A change in the frequency of a gene or allele in a population overtime
Evolution
“Father of Evolution”
Wrote the book “Origin of the Species”
Proposed a mechanism for evolution, natural selection
Charles Darwin
Organisms that are best adapted to an environment to survive and produce more than others.
Explains how evolution happens
Occurs through survival of the fittest
Natural Selection
Darwin’s theory of natural selection
1) Overproduction
2) Variation
3) Competition
4) Selection
Each species produces more offspring that can survive
Result to struggle for life
Overproduction
Each individual has unique combination of inherited traits
Variation
An inherited trait that increases and organism’s chance of survival
Adaptation
What is the importance of variation?
The more variation within an ecosystem, the higher chance of survival.
Individuals compete for limited resources
Not all individuals survive to adulthood
Comepition
The individuals with the best traits survive and have the opportunity to pass on its traits to an offspring
Selection
T or F
Natural selection acts on the phenotype not the genotype
T
T or F
Evolution occurs when good traits build up in a population over many generations and bad traits are eliminated by death
T
Each living species has descended with changes from other species overtime
Descent with Modification
All living organisms are related to one another
Common Descent