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Genome maps provide the DNA sequences of chromosomes. Some scientists have compared the genome maps of a hedgehog and a sloth. What do these genome maps allow the scientists to determine?
change in allele or genotype frequencies
migration
are descended from a common ancestor
An ant that is resistant to pesticide
a static environment
homologous structures
Organisms have changed over time
How closely related the two species are to each other.
Which condition is essential for natural selection to result in a new species?
change in allele or genotype frequencies
migration
are descended from a common ancestor
An ant that is resistant to pesticide
a static environment
homologous structures
Organisms have changed over time
How closely related the two species are to each other.
Evolution says which of the following?
change in allele or genotype frequencies
migration
are descended from a common ancestor
An ant that is resistant to pesticide
a static environment
homologous structures
Organisms have changed over time
How closely related the two species are to each other.
What is the movement of genes into and out of a gene pool called?
change in allele or genotype frequencies
migration
are descended from a common ancestor
An ant that is resistant to pesticide
a static environment
homologous structures
Organisms have changed over time
How closely related the two species are to each other.
Genetic variation can aid in the survival of species when the environment changes. Which of the following is the best example of an organism with a genetic variation that could improve survival chances over time?
change in allele or genotype frequencies
migration
are descended from a common ancestor
An ant that is resistant to pesticide
a static environment
homologous structures
Organisms have changed over time
How closely related the two species are to each other.
The opossum, which is native to North America, and the kangaroo, which is native to Australia are marsupials. The fact that both these mammals incubate their immature offspring in a pouch provides evidence that they –
change in allele or genotype frequencies
migration
are descended from a common ancestor
An ant that is resistant to pesticide
a static environment
homologous structures
Organisms have changed over time
How closely related the two species are to each other.
Upon close examination of the skeleton of an adult python, a pelvic girdle and leg bones can be observed. These features are an example of ______.
change in allele or genotype frequencies
migration
are descended from a common ancestor
An ant that is resistant to pesticide
a static environment
homologous structures
Organisms have changed over time
How closely related the two species are to each other.
Mutations occur because of ______.
change in allele or genotype frequencies
migration
are descended from a common ancestor
An ant that is resistant to pesticide
a static environment
homologous structures
Organisms have changed over time
How closely related the two species are to each other.
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