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23 Cards in this Set

  • Front
  • Back
1. The process by which new species originate?
Speciation
2. The process by which species cease to exist?
Extinction
3. Ernst Mayr defined a biological species as?
A population or group of populations that can interbreed and produce fertile offspring
4. Biologists divide mechanisms of reproductive isolation into?
-Two main groups
-Prezygotic types of isolation and postzygotic types of isolation
5.Which of the following is not a type of prezygotic reproductive isolation?
Hybrid Infertility
6. The type of reproductive isolation in which two populations live in the same habitat but remain isolated from one another due to one being active during the daytime only and the other being active only during the night is?
Temporal isolation
7.The type of reproductive isolation in which the two populations are separated due to their habitat is?
Ecological isolation
8. The type of reproductive isolation in which offspring are infertile because their chromosomes cannot align correctly during meiosis because of a different number of chromosomes being inherited from the two parents is?
Hybrid Infertility
9. The type of reproductive isolation in which two populations are separated due to the sperm cells of one not being able to recognize the egg cells of the other is?
Gametic Isolation
10. Zebroids, mules and ligers are all?
-Incapable of producing fertile offspring
-Hybrids
11. The spatial arrangements that may help cause speciation are?
Sympatric, parapatric and allopatric
12. Agents of allopathic speciation include?
Volcanoes
Earthquakes
Glaciers
Floods
13. Polyploid means?
Having three or more sets of chromosomes
14.The idea that evolution proceeds in small, incremental changes over many generations is?
Gradualism
15. The idea that evolution proceeds with long periods of stasis with relatively brief bursts of fast evolutionary change is?
Punctuated Equillibrium
16. Extinction of a species may be due to?
Human intervention
Introduction of a new predator
A matter of "bad luck"
Loss of habitat
17. Centimeter-thin layers of earth that are rich in iridium give evidence to support the:
Impact Theory
18. The impact of a large meteorite with Earth would have most likely caused mass extinctions by?
-Creating large clouds of dust that blocked out sunlight
-Destroying plant life on Earth
True/ False
19. A biological species is defined as a population or group of populations whose members can interbreed and produce fertile offspring.
true
20. True/ False
Today scientists can fill in gaps in defining species by DNA sequence analysis.
True
21. True/ False
Mules are considered to be a distinct species because they produce fertile offspring when mated
False
22. True/ False
"Missing" transitional forms may not be present in the fossil record because of poor preservation of biological material and simply because scientists have not discovered all there is to discover.
True
23. True/ False
The speciation that occurred in the islands of the Greater Antilles (Cuba, Puerto Rico, Jamaica and Hispaniola) with lizards called anoles is an example of adaptive radiation.
True