a type of absolute dating that uses known rates of radioactive decay to date fossils
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radiometric dating
Which of the following would be most useful for comparing ALL known groups of
organisms?
,a. DNA encoding ribosomal RNA
b. DNA encoding the keratin protein
c. mitochondrial DNA
d. Y chromosome DNA
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a. DNA encoding ribosomal RNA
form of natural selection in which the two extreme phenotypes are fittest
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disruptive selection
situation in which allele frequencies and genotype frequencies do not change from
one generation to the next
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hardy-weinberg equilibrium
Researchers find a fossil of a large mammal that contains one-sixteenth the amount of
carbon-14 that is present in living organisms. Using carbon-14 dating, about how old is
this fossil? Recall that carbon-14 has a half-life of 5,730 years.
a. 91,680 years
b. 22, 920 years
c. 11, 460 years
d. 17,190 years
, Give this one a try later!
b. 22,920 years
condition in which multiple alleles for the same gene persist indefinitely in a
population
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balanced polymorphism
1. compression
2. petrification
3. impression
4. cast
5. in tact preservation
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five ways that fossils can be formed
the idea that lower rock layers are older than those above them
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the principle of superposition
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radiometric dating
Which of the following would be most useful for comparing ALL known groups of
organisms?
,a. DNA encoding ribosomal RNA
b. DNA encoding the keratin protein
c. mitochondrial DNA
d. Y chromosome DNA
Give this one a try later!
a. DNA encoding ribosomal RNA
form of natural selection in which the two extreme phenotypes are fittest
Give this one a try later!
disruptive selection
situation in which allele frequencies and genotype frequencies do not change from
one generation to the next
Give this one a try later!
hardy-weinberg equilibrium
Researchers find a fossil of a large mammal that contains one-sixteenth the amount of
carbon-14 that is present in living organisms. Using carbon-14 dating, about how old is
this fossil? Recall that carbon-14 has a half-life of 5,730 years.
a. 91,680 years
b. 22, 920 years
c. 11, 460 years
d. 17,190 years
, Give this one a try later!
b. 22,920 years
condition in which multiple alleles for the same gene persist indefinitely in a
population
Give this one a try later!
balanced polymorphism
1. compression
2. petrification
3. impression
4. cast
5. in tact preservation
Give this one a try later!
five ways that fossils can be formed
the idea that lower rock layers are older than those above them
Give this one a try later!
the principle of superposition
