AP Bio Ch. 24 Assignment #3
Completion
Complete each
statement.
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1.
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Polyploidy means having extra sets of ___________________. (11 letters)
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2.
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Polyploidy results from the failure of paired chromosomes to separate during
mitosis or meiosis. This is called ________________. (14 letters)
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3.
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This type of polyploidy occurs when two different species interbreed and produce
hybrid offspring. ___________________. (13 letters)
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4.
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Polyploidy resulting from a single species is known as _________________. (13
letters)
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5.
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In a hybrid zone, this could happen. The reproductive barriers could be
weakened. This is called __________________. (6 letters)
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6.
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In a hybrid zone, this could happen. The reproductive barriers could be
strengthened. This is called __________________. (13 letters)
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7.
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In a hybrid zone, this could happen. The continued formation of hybrids. This is
called __________________. (9 letters)
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8.
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Periods of apparent stasis followed by a sudden change in new organisms is
coined _______________________. (20 letters)
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9.
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When species change gradually over time it is referred to as ______________
evolution.(9 letters)
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Matching
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Reproductive Barriers a. | habitat isolation | e. | gametic
isolation | b. | temporal isolation | f. | reduced hybrid viability | c. | behavioral isolation | g. | reduced hybrid fertility | d. | mechanical
isolation | h. | hybrid
breakdown |
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10.
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the sperm cannot fertilize the egg; biochemical barrier
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11.
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breed during different times; come into heat at different times
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12.
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the genes may interact in ways to impair a new organisms development
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13.
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the new organisms is vigorous and sterile but their offspring are
feeble
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14.
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two species occupy different habitats in the same area
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15.
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morphological differences will not allow mating; the parts do not fit
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16.
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the new organism is vigorous but sterile
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17.
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courtship rituals to attract a mate; if I cannot do the dance, I cannot get the
girl
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Species Concepts a. | biological | c. | ecological | b. | morphological | d. | phylogenetic |
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18.
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the smallest group of individuals that share a common ancestor
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19.
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species are separate due to reproductive barriers
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20.
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views a species in terms of its ecological niche
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21.
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characterizes a species by body shape and other structural features
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Speciation
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22.
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different country
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23.
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same country
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24.
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no geographical separation of the species
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25.
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there is a geographical separation of the species
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26.
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natural selection is the biggest driver of this speciation
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27.
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biggest driver of this speciation is polyploidy, habitat selection, and sexual
selection
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Short Answer
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28.
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Hey, guess what? Autopolyploidy is easy to explain with nondisjunction. It
involves the same species. The chromsomes didn’t separate so we have double the amount of
chromosomes. We went from a diploid organism to a tetraploid organism. So why don’t you
explain allopolyploidy in your own words. Do a good job or no point!
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