study guideeeee

Question 1

all of the following are true of evolution except

Answer 1

-individs adapt their genes to improve survival

Question 2

which is necessary for natural selection to proceed?

Answer 2

-all of the above ; variation within a population

a mach

Question 3

natural selection causes?

Answer 3

• changes in allele frequencies within a population

Question 4

all of the following are true of natural selection except

Answer 4

• it works best in genetically uniform populations

Question 5

natural selection that favors survival of extreme phenotypes of a population is called

Answer 5

• diversifying selection

Question 6

which of the following is more fit?

Answer 6

• a 500 year old bristlecone pine tree hat produced 100 offspring every yr

Question 7

when extreme phenotypes are selected against and disappear, which pattern of natural selection is at work

Answer 7

-stabilizing selection

Question 8

allele frequency of a population can change by

Answer 8

-all of the above
natural selection
genetic drift
mutations in the gene pool
founder effect

Question 9

the biological species concept defines a species as

Answer 9

-member of population that interbreed and produce fertile offspring

Question 10

frog species mate different times of the year. this is an example of which type of reproductive isolation

Answer 10

-temporal isolation

Question 11

-reproductive isolation based on location or geography is referred to as

Answer 11

-ecological isolation

Question 12

pollen from a tomato plant lands on a grape fruit flower. the pollen fails to grow a pollen tube this is an example of ?

Answer 12

• gametic isolation

Question 13

which of the following can influence the evolution of a species

Answer 13

-all of the above
mutations 
natural selection
genetic flow
genetic drift

Question 14

which of the following best points to a close evolutionary relationship between two different species?

Answer 14

-both species have very similar dna

Question 15

the proportion of alleles present in a gene pool is called the ______ and is an important tool in measuring evolutionary changes

Answer 15

-allele frequency

Question 16

in a population of 100 mice, if the recessive gene allele frequency is .25 how many copies of the recessive allele are found in the population

Answer 16

50

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Question 17

which of the following does not influence allele frequencies in a population

Answer 17

all of the above influence allele frequencies in a populations-

Question 18

inbreeding can lead to a decrease in genetic diversity and _______

Answer 18

inbreeding depression-

Question 19

which of the following is not an example of adaptive evolution?

Answer 19

-all
founder effect
gene flow
bottle neck 
mutation

Question 20

you examine a population and note that its allele frequency for a particular where B represents the dom allele and b represents the rec allele, you find that the allele frequencies for this gene are p=.3 and q=.7 if this pop is not evolving what would be the frequency of the heterozygous genotype

Answer 20

.42

Question 21

which of the following situations would represent a situation that reduces that effect of genetic drift

Answer 21

-the population is very large

Question 22

if you examine the gene pool of a pop that is evolving due to genetic drift what do you predict will occur

Answer 22

• there is no way to tell how p or q will change

Question 23

which of the following condition can lead to two populations booming different species

Answer 23

-all of the above. individuals in the two populations mate at diff times, **finish

Question 24

which of the following statements is FALSE

Answer 24

• the 13 diff species of fincehs flew tp the gallop island and separated themselve in response to diff food enviro

Question 25

all of darwins finches came from a single species with a normal break which of the following factors can explain the development of the variety of beaks in these finches today

Answer 25

-**fininsh ab and c

Question 26

which of the following statements regarding the dating of fossils is false

Answer 26

fossils can be daed using a microscope -

Question 27

which of the following scenarios would be least likely to result in a fossil

Answer 27

-a jellyfish that dies and slowly floats to the bottom the ocean

Question 28

which of the following changes in the evolutionary history of horses is documented by the fossil record

Answer 28

-a graduals decrease in the number of toes

Question 29

which of these characteristics would be expected to apply to a traditional fossil

Answer 29

• it should have some similarities to species that live before and after it

Question 30

which of the following sequences places tiktaalik in the correct evolutionary order?

Answer 30

lobe finned fish tiktaalik tertapods-

Question 31

what can we learn about vertebrate evolution from tiktaalik that we did not know before

Answer 31

how vertebrate evolved tread limbs-

Question 32

the variation in shape and function of the forelimb in tetrapods is a result of _____

Answer 32

evortionary adations to diff envirionment -

Question 33

the forelimb of a chicken and a primate contain many of the same bones arranged in the same order this is an expel of _____

Answer 33

-homology

Question 34

if you examine a pop for a particular gene where b represents the dom allele and b re***finish

Answer 34

.42