Final 2015 :)

Question 1

Why is meiosis significant?

Answer 1

To create genetic variance

Question 2

Meselson-Stahl

Answer 2

DNA is semiconservative

Question 3

Homology

Answer 3

features coming from the same ancestor

Question 4

Founder effect

Answer 4

creates a new population from ISOLATION

Question 5

Bottleneck Effect

Answer 5

new population from REDUCTION of alleles; pop is wiped out, one specific trait is left

Question 6

Directional

Answer 6

Going to one extreme or another- REDUCES DIVERSITY

Question 7

Stabilizing

Answer 7

Extremes are eliminated ex. average sized babies are most likely to survive

Question 8

Disruptive

Answer 8

Eliminates middle section- ex. birds with either short or long beaks are likely to survive

Question 9

Morphospecies

Answer 9

structural similarities in a species

Question 10

Phylogenic

Answer 10

Phylogenic trees

Question 11

Why are there seasons?

Answer 11

The Earth’s tilt

Question 12

Imprinting

Answer 12

Learning from parents- birds singing

Question 13

Thinking

Answer 13

Unsure if animals are able to think or not

Question 14

Survivorship curve I

Answer 14

Start dying out at old age

Question 15

Survivorship curve II

Answer 15

mortality isn’t dependent on age (straight downwards line)

Question 16

Survivorship curve III

Answer 16

Juvenile mortality is high- laying lots of eggs, many don’t survive

Question 17

Basidian mimicry

Answer 17

harmless imitates harmful

Question 18

Mullerian mimicry

Answer 18

2 harmful imitate each other to better their survival

Question 19

Mark-recapture technique

Answer 19

Mark caught animals, come back the next day, do the same thing; you will have animals that have already been marked

Question 20

Mark-recapture equation

Answer 20

(# marked x total caught) / # mark recaptured

Question 21

Immigration is higher on…

Answer 21

Close islands (easier to move)

Question 22

Extinction is higher on…

Answer 22

Small islands (less resources)

Question 23

Competitive exclusion principle

Answer 23

if two species are competing for the same prey, one will eventually become extinct

Question 24

Biological magnification

Answer 24

certain substances work their way through the food chain such as pesticides, chemicals, etc.

Question 25

Ecological pyramids

Answer 25

Primary producers have the most energy, energy is lost as the pyramid gets higher

Question 26

Spores are made by…

Answer 26

meiosis

Question 27

Gametophyte =

Answer 27

asexual; diploid

Question 28

Sporophyte =

Answer 28

sexual; haploid

Question 29

Mosses dominant stage =

Answer 29

gametophyte

Question 30

Ferns dominant stage =

Answer 30

sporophyte

Question 31

Convergent

Answer 31

traits lost somewhere along lineage- wings in insects and wings in birds