Brainscape's Knowledge GenomeTM

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


See full index

Pop Dynamics > HWE > Flashcards

HWE Flashcards

1
Q

Population genetics

A

Shows how genetic principals apply to entire pop

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

Gene pool

A

All of the gametes/alleles that occur within apricot populations

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

Population geneticists study frequency with which

A

Alleles occur in a gene pool

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

Evolution occurs when there is a change in

A

Allele frequencies

Population evolves not individuals

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

Genetic equilibrium

A

Variability in population stays same over generations, don’t evolve

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

5 assumptions of HWE

A 
No natural selection
No mutation 
Isolated population 
Large population-no genetic drift 
Random mating
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Is HWE realistic

A

No

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

HWE equation

A

P2 + 2PQ + Q2 = 1

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

What does p stand for

P2?

A

P is dom Allele

P2 is Homozygous dom genotype

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

What does q stand for

Q2

A

Q is recessive allele

Q2 is homo recessive genotype

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

2PQ

A

Hetero carriers genotype

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

Gene allele frequency

A

P play q

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

5 factors of evolution against HW

A 
Natural selection 
Mutation
Immigration emigration
Non random mating 
Small population
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Gene flow

A

Movement of allele from 1 pop to another from migration

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

Genetic drift

A

Allele frequency changes due to chance events in small pop

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

2 types of genetic drift

A

Founder effect

Bottleneck effect

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Founder effect

A

Small number of individuals leave original population and find new place

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Bottleneck effect

A

Pop reduced by non evolutionary means

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Speciation

A

New species formed caused by evolution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Population

A

Group of same species living in same area at same time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Population size

A

Number of individuals living in defined area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Population density

A

Number of organisms in given space like area and volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

3 types of dispersion patterns

A

Clumped distribution
Random distribution
Uniform distribution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Clumped distribution

A

Grouped in patches according to certain resource

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Random distribution

A

Resources abundant
Little competition
Rare

26
Q

Uniform distribution

A

Orderly distribution due to competition for natural resource

27
Q

Natality and immigration _ population

A

Increase

28
Q

Mortality and emigration _ pop

A

Decrease

29
Q

Closed populations don’t count

A

Immigration and emigration

30
Q

Growth rate formula

A

Change in population divided by time

31
Q

Capita growth rate

A

Change in pop divided by original population

32
Q

Carrying capacity

A

Max number of organisms that a habitat can support
Growth stops when capacity reached
Habitat changes can affect carrying capacity

33
Q

Carrying capacity determined by 2 factors

A

Biotic and abiotic

34
Q

Biotic factors

A

Food
Territory
Disease
Competition

35
Q

Abiotic factors

A

Weather
Climate
Sunlight
Nutrients

36
Q

Environmental resistance

A

All factors that limit population size to carrying capacity

37
Q

Biotic potential

A

Max number of offspring in I deal conditions

No resistance= biotic potential reached

38
Q

Density dependant factors

A

Limit pop size and growth size due to pop size

Limited food 
Shared resources
Predation 
Parasitism
Competition 
Disease
39
Q

Density independent

A

Limit pop and growth regardless of pop size

Natural disasters
Pesticides
Herbicides

40
Q

4 stages of growth models

A

Lag phase-delay before active reproduction

Growth phase-Accelerated reproduction bc lots of resources

Stationary phase-equilibrium achieved at carrying capacity

Death phase-increased environmental resistance

41
Q

J curve

A 
Constant growth rate 
Unlimited resources 
Max reproduction 
Unlimited exponential growth 
Capacity exceeded causing sharp death phase 
No stationary phase
42
Q

S curve

A

Assumes growth rate slows as pop size increases
Pop size fluctuates at carrying capacity (stationary phase)
Logistic growth
No death rate

43
Q

K strategists

A

Long life
long maturation time
Few offspring
Parental care

44
Q

R strategists

A

Short life
Quick maturation
Few offspring
Little parental care

45
Q

3 types of community interactions

A

Competition
Predator prey
Symbiosis

46
Q

Intraspecific

A

Between same species

47
Q

Inter specific

A

Between different species

48
Q

Predator prey purpose

A

Keep both populations balanced

49
Q

Defence mechanism for prey

4

A

Run and hide
Produce poison
Camouflage
Mimicry

50
Q

Cryptic colouration

A

Adaptations in form shape or behaviour to blend with surroundings

51
Q

Mimicry

A

Species copies marking and behaviour of different species that has selective advantage

52
Q

Symbiosis

A

Relationship between 2 species

53
Q

Parasitism

A

Parasite benefits and host is harmed

Keeps host alive unlike predator

54
Q

Commensalism

A

One benefits other is unbothered

55
Q

Mutualism

A

Both benefit

Pollination example

56
Q

Community

A

Different species in same place same time

Only biotic

57
Q

Ecosystem

A

Diff species in same place same time

Abiotic and biotic

58
Q

Succession

A

Slow gradual change in composition of community

Happens after disturbance

59
Q

Climax community

A

Stable
Little changes
Dominates areas for several years

60
Q

Primary succession

A

Area had no original plants or soil
Mosses and lichens gore first to break down stone or soil
Add nutrients to soil to support more complex plants

Pop Dynamics (1 decks)

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