Both natural selection and sexual selection result in organisms being better able to
survive in their environments true or false
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False
What is the most common fate of new gene duplicates?
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Pseudogenization
,Suppose a population of flour beetles has 1,000 individuals. Normally the beetles are
red; however, this population is polymorphic for a mutant autosomal body color,
black, designated by bb. Red is dominant to black, so BB and Bb genotypes are red.
Assume the population is at Hardy-Weinberg equilibrium, with equal frequencies of
the two alleles. What would be the expected frequencies of the red and black
phenotypes?
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0.75 red; 0.25 black
Approximately how much of the human genome consists of functional protein coding
sequence?
(Choose the closest value)
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less than 2%
Best vocab term: Autopolyploidy is a mechanism for this evolutionary event.
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sympatric speciation
In corn, kernel color is governed by a dominant allele for white color (W) and by a
recessive allele (w). A random sample of 100 kernels from a population that is in
, Hardy-Weinberg equilibrium reveals that 9 kernels are yellow (ww) and 91 kernels are
white.
Calculate the percentage of this population that is homozygous dominant (WW).
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0.49
A population of organisms will not evolve by natural selection if
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all individual variation is due only to environmental factors
Adaptive radiations are more likely to appear to follow which model for the pace of
evolution when studied in the fossil record?
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Punctuated equilibrium
The amino acid sequences of human and bonobo hemoglobin are almost identical,
yet they differ considerably from the sequence of the hemoglobin of wolves. This fact
indicates that
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survive in their environments true or false
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False
What is the most common fate of new gene duplicates?
Give this one a try later!
Pseudogenization
,Suppose a population of flour beetles has 1,000 individuals. Normally the beetles are
red; however, this population is polymorphic for a mutant autosomal body color,
black, designated by bb. Red is dominant to black, so BB and Bb genotypes are red.
Assume the population is at Hardy-Weinberg equilibrium, with equal frequencies of
the two alleles. What would be the expected frequencies of the red and black
phenotypes?
Give this one a try later!
0.75 red; 0.25 black
Approximately how much of the human genome consists of functional protein coding
sequence?
(Choose the closest value)
Give this one a try later!
less than 2%
Best vocab term: Autopolyploidy is a mechanism for this evolutionary event.
Give this one a try later!
sympatric speciation
In corn, kernel color is governed by a dominant allele for white color (W) and by a
recessive allele (w). A random sample of 100 kernels from a population that is in
, Hardy-Weinberg equilibrium reveals that 9 kernels are yellow (ww) and 91 kernels are
white.
Calculate the percentage of this population that is homozygous dominant (WW).
Give this one a try later!
0.49
A population of organisms will not evolve by natural selection if
Give this one a try later!
all individual variation is due only to environmental factors
Adaptive radiations are more likely to appear to follow which model for the pace of
evolution when studied in the fossil record?
Give this one a try later!
Punctuated equilibrium
The amino acid sequences of human and bonobo hemoglobin are almost identical,
yet they differ considerably from the sequence of the hemoglobin of wolves. This fact
indicates that
Give this one a try later!
