Need

Question 1

Components of hardy Weinberg

Answer 1

1. Very large population
2. No gene flow between populations
3. No mutations
4. Random mating
5. No natural selection

Question 2

Biological species

Answer 2

A species is a group of populations whose members have the potential to interbreed in nature and produce fertile offspring

Question 3

Morphological species

Answer 3

Classifying species based on observable and measurable physical traits such as shape, size, and other features of morphology (form)

Question 4

Ecological species

Answer 4

Identifies species in terms of their ecological niches, focusing on unique adaptations to particular roles in a biological community

Question 5

Phylogenetic species

Answer 5

A species is the smallest group of individuals that shares a common ancestor and that forms one branch on the tree of life

Question 6

Prezygotic barriers

Answer 6

Temporal isolation, habitat isolation, behavioral isolation, mechanical isolation, gametic isolation

Question 7

Postzygotic barriers

Answer 7

Reduced hybrid viability, reduced hybrid fertility, hybrid breakdown

Question 8

Temporal isolation

Answer 8

Mating or flowering occurs at different seasons or times of day

Question 9

Habitat isolation

Answer 9

Populations live in different habitats and do not meet

Question 10

Behavioral isolation

Answer 10

There is little or no sexual attraction between different species

Question 11

Mechanical isolation

Answer 11

Structural differences in genitalia or flowers prevent copulation or pollen transfer

Question 12

Gametic isolation

Answer 12

Male and/or female gametes die before uniting or fail to unite

Question 13

Reduced hybrid viability

Answer 13

Hybrids fail to develop or to reach sexual maturity

Question 14

Reduced hybrid fertility

Answer 14

Hybrids fail to produce functional gametes

Question 15

Hybrid breakdown

Answer 15

Offspring of hybrids are weak or infertile

Question 16

Allopathic speciation

Answer 16

When the initial block to gene flow is a geographic barrier that isolated a population

Question 17

Sympathetic speciation

Answer 17

A new species arises within the same geographic area as a parent species

Question 18

Ways sympatric speciation can happen

Answer 18

Parent species doubles DNA but doesn’t replicate, then splits and doubles again. Ends up with 4n
Species A has two chromosomes in gamete, species B has three, they unite and double chromosomes. Ends up with added A and B chromosomes

Question 19

Adaptive radiation

Answer 19

The evolution of many diverse species from a common ancestor

Question 20

Punctuated equilibrium

Answer 20

Long periods of little change, or equilibrium, punctuated by abrupt episodes of speciation

Question 21

Gradualism

Answer 21

Slow, gradual changes in a species

Question 22

Phylogeny

Answer 22

The evolutionary history of a species or group of species

Question 23

Convergent evolution

Answer 23

Species from different evolutionary branches may come to resemble one another if they live in similar environments and natural selection favors similar adaptations

Question 24

Order of size things levels

Answer 24

Species, genus, family, order, class, phylum, kingdom, domain

Question 25

Parsimony

Answer 25

The quest for the simplest explanation for observed phenomena

Question 26

Three-domain system

Answer 26

Two domains of prokaryotes: bacteria and archaea

One domain of eukaryotes: eukarya

Question 27

Primary succession

Answer 27

When ecological succession begins in a virtually lifeless area with no soil

Question 28

Secondary succession

Answer 28

Occurs where a disturbance has destroyed an existing community but left the soil intact

Question 29

Carbon goes from earth into air

Carbon goes from air into earth

Answer 29

(Cellular) respiration

Photosynthesis