Evolution and Natural selection Flashcards
1
Q
when did earth originate
A
4.6 billion years ago
2
Q
what is evolution
A
the heritable changes in populations over time
3
Q
what did Darwin and Wallace think of evolution
A
that natural selection was the mechanism for evolutionary change
4
Q
what does “survival of the fittest” refer to
A
the more an organism is able to addapt the more likely it will survive and reproduce
5
Q
what is artificial selection
A
when humans intervene is the natural selection process
6
Q
what did Mendel’s breeding experiments show
A
how variation is maintain and passed on
7
Q
what are alleles
A
alternate forms of genes that control the same trait
8
Q
do traits blend during inheritance
A
NO
9
Q
when were genetics included in evolutionary thinking
A
early 20th century
10
Q
what is the modern view of evolution
A
- natural selection was reaffirmed
- ideas of genetics drift emerged
- importance of mutations were realized
