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8 Cards in this Set
- Front
- Back
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What can advances in techniques clarify? |
Evolutionary relationships. |
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What have advances in genome sequencing allowed us to do? |
Determine the entire base sequence of an organisms DNA. |
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How can genome sequencing be used to clarify evolutionary relationships? |
• The DNA base sequence of one organism can be compared with the base sequence of another.
• Closely related species will have a higher percentage of similarity in their DNA base order. |
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How can comparing amino acid sequences be used to clarify evolutionary relationships? |
• Related organisms have similar DNA sequences and so similar amino acid sequences.
• eg. Cytochrome C is a short protein found in many species. The more similar the amino acid sequence of cytochrome C in two different species, the more closely related the species are likely to be. |
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Immunological comparisons can be used to clarify evolutionary relationships. How? |
Similar proteins will bind to the same antibodies. |
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How were early estimates of genetic diversity made? |
By looking at the frequency of measurable or observable characteristics in a population. |
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How do scientists determine how many different alleles there are of a gene, in a population? |
By comparing DNA base sequence of same gene as alleles have slightly different DNA base sequences. |
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What will different alleles also produce? |
• Slightly different mRNA base sequences.
• Slightly different proteins with slightly different amino acid sequences. |
