12 - THE GENETICS OF NATURAL SELECTION Flashcards by Lamija Mrndic | Brainscape

Q

small population and the extinction vortex

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

what do population genetics models of selection allow us to do

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

coal burning in britain and the peppered moth

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

what are the genotypes of the light and dark forms of the peppered moth

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

what is relative fitness

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

how can we calculate the genotype frequencies weighted by fitness and how is the average for a population obtained

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

how can we calculate genotype frequencies after selection by using the model of selection

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

what is an example of balancing selection that can occur in nature

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

what is an example of heterozygote advantage as a type of balancing selection

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

what is the mathematical model for heterozygote advantage

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

why do deleterious mutations persist even though they should be removed from populations by selection

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

A

population fitness = 0.81875

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

what are selective sweeps

A

selective sweeps leave behind a trace of past events that have influenced the genome: ghost of selection past

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

main points of natural selection

A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

what are complex traits

A

influenced by many genes (example height)
also called quantitative traits
the distribution of phenotypic states is bell curve shaped

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

what is quantitative genetic variation important for

A

Q

what are the different types of complex traits

A

continuous (suchs as height or running speed)
threshold (either/or) where there is an environmental and a genetic liability, and when you have both you have the trait (cancer, heart disease)

Q

what is variance

A

Q

what is phenotypic variance of a trait

A

Q

what is the multifactorial model for complex trait variation

A

(for example blood pressure)
can be decomposed into environmental and genetic factors

Q

complex traits main points

A