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Flashcards in Chapter 24 Deck (12):
0

The development of a new species

Speciation

1

Gradual shifts over time in the allele frequencies in particular populations

Micro evolution

2

Made up by microevolution
The overall pattern of relationships among all organisms

Macroevolution

3

Group of populations that can reproduce with each other and produce viable, fertile offspring

Species

4

The five barriers that prevent members of two different species from producing a hybrid zygote

Habitat isolation
Temporal isolation
Behavioral isolation
Mechanical isolation
Gametic isolation

5

Is reproductive isolation the only way to define different species?

No

6

Physically separated speciation

Allopatric

7

Together in the same location
Speciation without physical separation

Sympatric

8

New species can arise when cell division errors or hybridization result in a change in the number of __ that a new individual has

Chromosomes

9

New species appears suddenly in the fossil record then stays basically the same for a long time

Punctuated equilibrium

10

Does a punctuated equilibrium indicate that the new species arose instantaneously

No because suddenly is a relative term- it actually took thousands of years

11

An example of how a change in a single gene can create the reproductive isolation that leads to speciation

Snail she'll spiral direction