Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
what is evolution?
|
changes of species over time
|
|
|
what are adaptations?
|
inherited traits that allow organisms survive and reproduce
|
|
|
difference between acquired traits and inherited traits?
|
acquired traits: isn't passed down from offspring
inherited traits: determined by genes |
|
|
definition of biogeography ?
|
the study where the organisms live today and where their ancestors lived in the past
|
|
|
difference between convergent and divergent evolution?
|
Convergent: unrelated species that look similar because they live in similar environments.
Divergent: related species that look different because they live in different environments. |
|
|
definition of fitness?
|
the ability for an organism to survive and reproduce.
|
|
|
difference between artificial and natural selection?
|
Artificial selection: nature provides variation and humans select those they find desirable.
Natural selection: nature picks the best fit. |
|
|
conditions necessary for natural selection to occur?
|
1)Struggling for existence
2)Variation and adaptation 3)Survival of the fittest 4) Natural selection occurs |
|
|
what is the principle of common descent?
|
every living species are descendants from the same common ancestors
|
|
|
list the evidence for evolution!
|
1)biogeography
2)age of earth and fossil records 3)comparing anatomy and embryology 4)genetics and molecular biology 5)testing natural selection |
|
|
what does the phrase " struggle for existence" mean?
|
members of population compete for necessities of life.
|
|
|
be able to identify examples of homologous, analogous and vestigial structures.
|
Homologous: similar structure with different functions
Analogous: different structures with same functions Vestigial: body parts that aren't needed (wisdom teeth, tail bone, appendix) |
