Speciation, extinction, cladograms, niches and gradualism

Created April 2020, Offline version here
Videos by Paul Andersen. Visit his website: Bozeman Science.

1
1
On a cladogram, what does it mean when there is branching into two?
2
1
Extinction is going from what number of species to what number of species?
3
1
Which of the following processes results in more biodiversity?
4
1
In the example of the stickleback fish, what was the environmental pressure that pressured the stickleback to speciate?
5
1
Which of the following is one reasoning for why adaptive radiation occurs?
6
1
Which of the following is one reason for why extinction happens?
7
1
If a species is described as “extant”, what does that mean?
8
1
Which of the following is NOT plausible cause of a mass extinction?
9
1
What is the one distinction a group of organisms must have for it to be considered a different species?
10
1
Which of the following does NOT give rise to reproductive isolation?
11
1
What is the main difference between allopatric and sympatric speciation?
12
1
In temporal isolation, what is the barrier preventing the organisms from reproducing?
13
1
Peacock spiders have special mating habits in that they perform a mating dance to attract females for breeding. What type of reproductive barrier is this?
14
1
Suppose two organisms were successful in breeding and giving birth to an offspring, but the offspring itself cannot birth fertile offspring. What type of reproductive barrier is this?
15
1
What effect on population genetics does reproduction isolation have?
16
1
Which of the following would result in the fastest rate of speciation?
17
1
Phyletic gradualism can be best described as what?
18
1
Which of the following is NOT an acceptable piece of evidence that supports the claim of the K-T mass extinction was due to an asteroid?
19
1
Suppose that a population of lions and another population of tigers lived in the same area. One lion and one tiger were able to breed and produce offspring, but the offspring is sterile. Is it likely for speciation to occur?
20
1
The example of meadowlark birds resulting in to species because of the conclusion of an ice age is an example of what type of reproductive isolation?