Mechanism of Evolution Flashcards
(10 cards)
1
Q
is a population evolves because the population contains the collection of genes
A
Gene pool
2
Q
is the process by which the individual who is more for the environment survive and reproduce. it is simple result of variation, differential reproduction, and heredity
A
Natural selection
3
Q
- are changes in the DNA.
- It is the ultimate source of variation
A
Mutations
4
Q
- is any movement of genes from one population to another
- is an important source of genetic variation
A
Gene flow
5
Q
- leads to genetic material being shuffled. This shuffling along with sexual reproduction leads to variation within population.
- This variation leads to selection which ultimately leads to evolution
A
Recombination
6
Q
- can introduce new gene combinations into a population.
- This genetic shuffling is another important source of genetic variation
A
Sex
7
Q
- is the process by which modern organisms have descended from ancient ancestors.
- It is also responsible for both the remarkable similarities we see across all life and the amazing diversity of that life
A
Evolution
8
Q
- Is one of the basic mechanisms of evolution, along with mutation, migration, and genetic drift. Is a change in allele frequencies that occurs because some genotypes are more fit than others
- Genotypes with greater fitness produce more offspring and pass more copies of their alleles to the next generation. This is the force of evolution that Darwin identified
A
Natural Selection
9
Q
Biologists use the word ____ to describe how good a particular genotype is at leaving offspring in the next generation relative to how good other genotypes are at it
A
Fitness
10
Q
- Creates new genetic variation in a gene pool. This is how all new alleles first arise. It’s the ultimate source of new genetic variation, so it is essential for evolution
- May be harmful or benign, but they may also be beneficial
A
Mutation
