Evolution (plants)

Question 1

Evolution

What is a theory

Answer 1

A hypothesis that has been rigorously tested

Question 2

Evolution

What is a law

Answer 2

A universal truth

Question 3

Evolution

Definition

Answer 3

The change in allele frequencies in a population overtime

Question 4

Evolution

Allele=

Answer 4

Form of a gene

Question 5

Evolution

Frequency=

Answer 5

How often something occurs

Question 6

Evolution

Population=

Answer 6

All members of a species that interact

Question 7

Evolution

What are the 4 ways to change allele frequencies

Answer 7

Natural selection
Mutation
Genetic drift
Gene flow

Question 8

Evolution

Natural selection means

Answer 8

The best suited for the environment have a higher probability of survival and production

“Survival of the fittest”

Question 9

Evolution

What are the 3 modes of natural selection

Answer 9

Directional selection
Disruptive selection
Stabilizing selecton

Question 10

Evolution

Directional selection means

Answer 10

1 extreme phenotype is favored

Question 11

Evolution

Disruptive selection means

Answer 11

Both extreme phenotypes are favored

Question 12

Evolution

Stabilizing selection means

Answer 12

Average phenotype is favored

Question 13

Evolution

What are the 3 general trends of natural selection

Answer 13

Coevolution
Adaptive radiation
Convergent evolution

Question 14

Evolution

Coevolution means

Answer 14

One species evolves in response to another species’ evolution

Question 15

Evolution

Adaptive radiation means

Answer 15

Parts of a lineage acquire different characteristics to adapt to different environments

Question 16

Evolution

Convergent evolution

Answer 16

Distantly-related lineages acquire similar characteristics to adapt to similar environments

Question 17

Evolution

Mutation means

Answer 17

An error in copying DNA / reproductive cells

Question 18

Evolution

What is the only way to get new alleles

Answer 18

Mutation

Question 19

Evolution

Mutations are often ___ -

Answer 19

Silent, not expressed in phenotype

Question 20

Evolution

Mutations are rarely (5)

Answer 20

Fatal
Change protein shape
3rd codon
Beneficial
Rare occurence 0.1-100 mutations / genome / generation

Question 21

Evolution

Genetic drift means

Answer 21

Allele frequencies change by chance

Question 22

Evolution

Gene flow means

Answer 22

Movement of alleles from one population to another

Question 23

Rates of Evolution

Punctuated equilibrium means

Answer 23

Years of rapid evolution followed by many years of no evolution

Question 24

Rates of Evolution

Gradualism menas

Answer 24

Constant, tiny evolutionary events

Question 25

Speciation | Definition

Answer 25

Formation of new species | Opposite of extinction

Question 26

Speciation | Population must be ___ ___

Answer 26

Genetically isolated

Question 27

Speciation | What are the 2 categories

Answer 27

Pre-zygotic | Post-zygotic

Question 28

Pre-zygotic means

Answer 28

Before the zygote is formed

Question 29

Speciation | 3 types of pre-zygotic isolation

Answer 29

Geographic isolation Ecological isolation Mechanical isolation

Question 30

Speciation | Geographic isolation means

Answer 30

Physical barrier prevents pollination

Question 31

Speciation | Ecological isolation means

Answer 31

Bloom times not aligned

Question 32

Speciation | Mechanical isolation means

Answer 32

Exine doesnt fit into the receptors of the stigma

Question 33

Speciation | Post-zygotic means

Answer 33

After the zygote is formed

Question 34

What are the 3 types of post-zygotic speciation

Answer 34

Zygote death due to chromosomal mismatch Hybrid sterility Reduced hybrid fitness

Question 35

Speciation | What is polypolidy

Answer 35

Increased survival due to redundant genes

Question 36

Speciation | What are the 2 types of polyploidy

Answer 36

Allopolyploid | Autopolyploid

Question 37

Speciation | Allopolyploid means

Answer 37

A hybrid of 2 different species

Question 38

Speciation | Autopolyploid

Answer 38

A hybrid of 2 different populations of same species