Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Genetics > Evolution > Flashcards

Evolution Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is evolution

A

The change in the frequency of traits or allows over generations

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What does evolution require

A

A variation in traits

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How are variations in traits created

A

Through mutation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is an agent of evolution

A

A factor contributing to the change in frequency of a Liles overtime

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the four agents of evolution

A

Mutation natural selection genetic drift and migration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is natural selection

A

The environment force determining whether a trait is advantageous or deleterious

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Traits that are favoured by natural selection increase in what overtime

A

Frequency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Traits that are less favourable or harmful blank in frequency overtime

A

Decrease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is genetic drift

A

The change in frequency of an allowed due to small population size

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Genetic drift affects traits in what way

A

Randomly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What can genetic drift lead to

A

Genetic erosion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is inbreeding

A

The mating of genetically similar individuals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is migration

A

The change in the frequency of an allowed due to individuals entering and exiting a population

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What’s the difference between immigration and emigration

A

Immigration=into a population

Emigration=out of a population

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What can migration increase

A

Genetic variation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are patterns of evolution

A

Theories describing how rapidly and consistently evolution occurs over time

17
Q

What is gradualism

A

The theory that revolutionary change is constant and slow

18
Q

what is punctured equilibrium

A

The theory that revolutionary change occurs in rapid bursts following by long periods of no change

19
Q

Evolution occurs gradually when there is what

A

A disturbance

20
Q

What is a disturbance

A

Any event that eliminates a significant number of species from an ecosystem

21
Q

What are the three examples of disturbances

A

Global warming super volcanos and astroid impacts

22
Q

Following a disturbance what opens up in the ecosystem

A

Niches

23
Q

What is adaptive radiation

A

A sudden burst of speciation

24
Q

How many mass extinctions were there

A

5

25
Q

How do we get new species

A

When the low frequency of a population become so extreme that individuals are no longer able to reproduce with other populations

26
Q

What is a species

A

A group of genetically related organisms that are able to produce viable offspring

27
Q

What is speciation

A

The process of new species emerging due to evolutionarily forces

Genetics (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions