Welcome to the Quiz!
This quiz contains 5 questions from a mix of 1 subtopics.
What does the 'molecular clock' hypothesis assume?
a constant rate of environmental change over time
a constant rate of mutation over time
a constant rate of evolution over time
a constant rate of reproduction over time
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In a family tree of different species, where is the oldest species shown?
in the middle of the tree
at the ends of the branches
it depends on the specific tree
at the base of the tree
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Which of the following molecules mutates faster than nuclear DNA?
cytochrome c
ribosomal RNA
mitochondrial DNA
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Which of the following is true about the number of differences in nucleotide sequences between two species?
the number of differences is always the same for any two species
the greater the number of differences, the longer ago those individuals shared a common ancestor
the greater the number of differences, the more recently those individuals shared a common ancestor
the number of differences has no relation to the time since those individuals shared a common ancestor
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Which of the following molecules is useful for studying evolutionary links because it is involved in cellular respiration so is highly conserved?
nuclear DNA
messenger RNA
ribosomal RNA
cytochrome c
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