Evolution (Selection - other evolutionary theories) Flashcards

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1
Q

Speciation is when…

A

A first specie gives rise to a different specie

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2
Q

For speciation to happen, both organisms that are mating have to be…

A

Reproductively isolated

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3
Q

Reproductive barriers are….

A

Barriers that isolate a specie.

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4
Q

Geographical barriers are….

A

physical boundaries, that stop species from sharing the same space

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5
Q

Example of geographical isolation.

A

Chimpanzees and bonobos, isolated by the congo river

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6
Q

Temporal Isolation happens when….

A

different species are separated because of migratory movements.

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7
Q

Example of temporal isolation.

A

Female dogs can get pregnant 2 times per year, when they have periods

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8
Q

Chromosomal isolation is when the number of…

A

Structure os the chromosomes start showing differences, so gametes are incompatible

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9
Q

Example of chromosomal isolation:

A

Chimps and humans, they are not compatible anymore

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10
Q

Behaviourl isolation happens when the apperance…

A

of different traits that match behaviours of different individuals in a population, trigger a reproductive barrier.

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11
Q

Example of behavioural isolation:

A

Male fireflies make a specific light pattern to attract females.

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12
Q

What are other evolutionary theories

A

Neutral theory and Punctuated equilibrium theory

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