1. Basics at Cardiff University | Flashcards & Summaries

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What does molecular evolution taking place at a constant rate suggest?

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it's mostly governed by accumulation of nearly neutral mutations

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Which one of these mutations cannot change DNA sequences over time?

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point mutations

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Which of the below is true about Darwin's On the Origin of Species (1859)?

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it included ideas such as blending inheritance

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What are the factors involved in sexual selection?

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male competition and female choice

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What transcription factor is responsible for the adaptive radiation in Darwin's finches, and what else is it responsible for?

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ALX1 - cranial facial development in humans

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Which of these is not a theory for why giraffes have long necks?

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competing browser hypothesis

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Define molecular clock

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using the mutation rate of biomolecules to deduce the time in prehistory when two or more life forms diverged 

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Define adaptation

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condition of organisms being well equipped - both by structure and function, or behaviour - to living in their environment

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What were the earliest animal fossils like?

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soft-bodied, marine, mostly suspension or detritus feeders

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Which is true?

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smaller populations can show larger rates of genetic drift

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Which one of these processes cannot affect allele frequencies within populations over successive generations?

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mutations

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When was the Cambrian explosion?

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c. 544 MYA

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Q:

What does molecular evolution taking place at a constant rate suggest?

A:

it's mostly governed by accumulation of nearly neutral mutations

Q:

Which one of these mutations cannot change DNA sequences over time?

A:

point mutations

Q:

Which of the below is true about Darwin's On the Origin of Species (1859)?

A:

it included ideas such as blending inheritance

Q:

What are the factors involved in sexual selection?

A:

male competition and female choice

Q:

What transcription factor is responsible for the adaptive radiation in Darwin's finches, and what else is it responsible for?

A:

ALX1 - cranial facial development in humans

Mehr Karteikarten anzeigen
Q:

Which of these is not a theory for why giraffes have long necks?

A:

competing browser hypothesis

Q:

Define molecular clock

A:

using the mutation rate of biomolecules to deduce the time in prehistory when two or more life forms diverged 

Q:

Define adaptation

A:

condition of organisms being well equipped - both by structure and function, or behaviour - to living in their environment

Q:

What were the earliest animal fossils like?

A:

soft-bodied, marine, mostly suspension or detritus feeders

Q:

Which is true?

A:

smaller populations can show larger rates of genetic drift

Q:

Which one of these processes cannot affect allele frequencies within populations over successive generations?

A:

mutations

Q:

When was the Cambrian explosion?

A:

c. 544 MYA

1. Basics

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