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Homework answers / question archive / Question 1 1 / 1 pts It is difficult to classify humans into races because: there are too many different races variation in one trait is usually discrete rather than clinally distributed classifications based on different characters classify the same people into different groups anthropologists have only recently begun to tackle the problem of human variation Question 2 1 / 1 pts Most mutations are: adaptive (they have a positive affect on the fitness of an organism) powerful (they have a powerful affect on the fitness of an organism) deleterious (they have a negative affect on the fitness of an organism) neutral (they have no affect on the fitness of an organism) Question 3 1 / 1 pts Genetic drift is: change in allele frequency due to genetics change in allele frequency due to selection change in allele frequency due to convergence change in allele frequency due to chance Question 4 1 / 1 pts Most genetic variation exists between groups none of these within groups between races Question 5 1 / 1 pts Most observed human variation changes gradually, rather than having discrete boundaries as expected - this gradual change is referred to a___________
Question 1
1 / 1 pts
It is difficult to classify humans into races because:
there are too many different races
variation in one trait is usually discrete rather than clinally distributed
classifications based on different characters classify the same people into different groups
anthropologists have only recently begun to tackle the problem of human variation
1 / 1 pts
Most mutations are:
adaptive (they have a positive affect on the fitness of an organism)
powerful (they have a powerful affect on the fitness of an organism)
deleterious (they have a negative affect on the fitness of an organism)
neutral (they have no affect on the fitness of an organism)
1 / 1 pts
Genetic drift is:
change in allele frequency due to genetics
change in allele frequency due to selection
change in allele frequency due to convergence
change in allele frequency due to chance
1 / 1 pts
Most genetic variation exists
between groups
none of these
within groups
between races
1 / 1 pts
Most observed human variation changes gradually, rather than having discrete boundaries as expected - this gradual change is referred to a___________.
cine
slow change
clinal
gradient
0 / 1 pts
Traits are more likely to exhibit continuous variation when:
inheritance is blending rather than particulate
they are affected by alleles at only one locus
they are determined by alleles at multiple loci
there are no environmental influences
1 / 1 pts
Which of the following does not increase allelic variation?
recombination
natural selection
none of these
mutation
0 / 1 pts
Recombination is important in evolution because it results in:
an increase in the amount of mutations that could possibly be passed onto the offspring
an increase in the amount of variation that can be passed on to an offspring
the swapping of chromosome segments between two maternal chromosomes
the swapping of chromosome segments between two paternal chromosomes
0 / 1 pts
These are all used to measure human genetic variation
blood type, DNA, STRs
SNPS, RSS, mtDNA
STRs, SNPS, mtDNA
mtDNA, RSS, blood type
1 / 1 pts
Which of these is not a problem with racial classification?
there are no sharp boundaries of human variation
most variation is found within groups
African populations have more diversity than any other population
every racial classification was different from the next
Question 1
1 / 1 pts
It is difficult to classify humans into races because:
there are too many different races
variation in one trait is usually discrete rather than clinally distributed
Correct!
classifications based on different characters classify the same people into different groups
anthropologists have only recently begun to tackle the problem of human variation
1 / 1 pts
Most mutations are:
adaptive (they have a positive affect on the fitness of an organism)
powerful (they have a powerful affect on the fitness of an organism)
deleterious (they have a negative affect on the fitness of an organism)
Correct!
neutral (they have no affect on the fitness of an organism)
1 / 1 pts
Genetic drift is:
change in allele frequency due to genetics
change in allele frequency due to selection
change in allele frequency due to convergence
Correct!
change in allele frequency due to chance
1 / 1 pts
Most genetic variation exists
between groups
none of these
Correct!
within groups
between races
1 / 1 pts
Most observed human variation changes gradually, rather than having discrete boundaries as expected - this gradual change is referred to a___________.
cine
slow change
Correct!
clinal
gradient
0 / 1 pts
Traits are more likely to exhibit continuous variation when:
You Answered
inheritance is blending rather than particulate
they are affected by alleles at only one locus
Correct answer
they are determined by alleles at multiple loci
there are no environmental influences
1 / 1 pts
Which of the following does not increase allelic variation?
recombination
Correct!
natural selection
none of these
mutation
0 / 1 pts
Recombination is important in evolution because it results in:
an increase in the amount of mutations that could possibly be passed onto the offspring
Correct answer
an increase in the amount of variation that can be passed on to an offspring
You Answered
the swapping of chromosome segments between two maternal chromosomes
the swapping of chromosome segments between two paternal chromosomes
0 / 1 pts
These are all used to measure human genetic variation
You Answered
blood type, DNA, STRs
SNPS, RSS, mtDNA
Correct answer
STRs, SNPS, mtDNA
mtDNA, RSS, blood type
1 / 1 pts
Which of these is not a problem with racial classification?
there are no sharp boundaries of human variation
most variation is found within groups
Correct!
African populations have more diversity than any other population
every racial classification was different from the next