Welcome to the Quiz!
This quiz contains 9 questions from a mix of 1 subtopics.
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?
messenger RNA
ribosomal RNA
nuclear DNA
cytochrome c
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Which of the following is an example of a trait that is influenced by both multiple genes and environmental factors?
eye colour in humans
height in humans
blood type in humans
sickle cell anaemia in humans
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What does it mean when a trait is polygenic?
it is not influenced by genes at all
it is influenced by a single gene
it is only influenced by environmental factors
it is influenced by several genes
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Why do closely related species have more similar amino acid sequences?
because amino acid sequences are determined by mRNA and DNA
because they have similar fossil records
because they have similar diets and environmental conditions
because they have similar anatomical structures
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Which of the following molecules changes slowly, making it useful for showing connections between species that diverged long ago?
messenger RNA
ribosomal RNA
mitochondrial DNA
chloroplast DNA
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What does comparative biochemistry involve?
analysing the fossil record to understand how organisms have changed over time
observing the behaviour of animals in their natural habitats to determine their evolutionary history
studying the molecular aspects of organisms to uncover genetic diversity and evolutionary relationships
examining the anatomical structures of different living species to find similarities and differences
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Which of the following is a limitation of using observable characteristics to measure genetic diversity?
(Select all that apply)
traits are often polygenic
environmental factors can alter traits
traits are always in discrete categories
traits are typically monogenic
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Which of the following is true about traits that change gradually across a range?
they are easy to differentiate
they fall into distinct categories
they are difficult to differentiate
they are not influenced by genes
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