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19 notecards = 5 pages (4 cards per page)

Viewing:

Evolution

front 1

Which of the following is(are) homologous to the bones in this image?

back 1

front 2

The wing of a bat is homologous to the _____ of a whale.

back 2

flipper

front 3

Which of the following statements about natural selection is true?

back 3

Natural selection favors individuals that reproduce more than others.

front 4

Which term describes a trait that increases an individual's ability to survive in a particular environment?

back 4

Adaptation

front 5

Which term describes the ability of a trait to be passed on to offspring?

back 5

Heritability

front 6

Which of the following organisms could be produced by artificial selection?

back 6

A cow that produces a large quantity of milk.

front 7

Which pair of chickens should a farmer breed to produce larger chickens?

back 7

Large hen, large rooster

front 8

A farmer wishes to develop a strain of high-yield corn that is also resistant to drought. He has the following individuals from the current year's crop:

Individual A—Yield: 179 bushels/acre; drought resistance: high
Individual B—Yield: 220 bushels/acre; drought resistance: low
Individual C—Yield: 185 bushels/acre; drought resistance: medium
Individual D—Yield: 140 bushels/acre; drought resistance: high
Individual E—Yield: 200 bushels/acre; drought resistance: medium

Which of the following crosses would produce the highest corn yield with the highest resistance to drought?

back 8

A and E

front 9

Which of the following statements is an accurate combination of postulates 1 and 2 of natural selection?

back 9

Heritable variation exists for traits among individuals in a population.

front 10

Which of the following statements is an accurate combination of postulates 3 and 4 of natural selection?

back 10

Individuals experience differential success in their ability to survive or reproduce due to differences in certain traits.

front 11

Does the ability of a Mycobacterium tuberculosis cell to infect a new host depend on its drug-resistant phenotype?

back 11

No, drug-susceptible cells and drug-resistant cells are equally likely to infect a new host.

front 12

Which of the following statements describes the evolution by natural selection of Mycobacterium tuberculosis bacteria in their new environment?

back 12

The drug-resistance trait is an adaptation to the environment in which human hosts are medicated with the antibiotic rifampin

front 13

In the United States today, about half of the corn crop is genetically engineered with a protein that is toxic to corn borers, an insect pest of corn. Which of the following conditions would be necessary for evolution of resistance to the toxic protein to occur in the corn borer?

back 13

The corn borer must have or generate (by mutation) heritable variation in resistance to the toxic protein. The resistant corn borers must survive better or reproduce more than nonresistant corn borers.

front 14

True or false? It would be difficult to assess whether the drug-susceptible or drug-resistant phenotype in a population of Mycobacterium tuberculosis was more fit in an environment without antibiotics.

back 14

True

front 15

Different finch species have beaks of different shapes and sizes. What do these beak differences tell us?

back 15

Different finch beak shapes are evidence that finch species adapted to different environments over many generations.

front 16

Genetic evidence supports which of the following explanations for the presence of 13 different finch species on the Galápagos islands?

back 16

Many years ago, a small population of a single finch species migrated to the islands and evolved into the current 13 species.

front 17

The top figure shows beak sizes of the 1976 finch population before the drought of 1977 (red bars) and after the drought (black bars). The lower figure shows the beak sizes of the offspring of the drought survivors in 1978. What do these figures tell us?

back 17

The overall beak depths of the 1978 offspring population are larger the original 1976 population.

front 18

How did the Grants test their hypothesis that differences in birds’ songs can keep different species of finches from breeding with one another?

back 18

They played the songs of medium ground finches and cactus finches through a loudspeaker to see which species responded to each song.

front 19

In which situation can just a few genes dramatically change an organism's entire appearance?

back 19

when the genes each control the expression of many other genes