| DQ 21.1 |
In the major transitions in evolution, independently replicating entities come together to produce a more complex organism. Give examples of such transitions, and explain how cooperation can evolve despite the potential for one partner to replicate at the expense of the other.
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| DQ 21.2 |
How can the harmful consequences of non-Mendelian transmission be suppressed? Why is inheritance in eukaryotes in fact usually Mendelian?
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| DQ 21.3 |
What is the evidence that most DNA, in most eukaryotes, has no function?
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| DQ 21.4 |
Why is a much larger fraction of the genome nonfunctional in eukaryotes compared with bacteria and archaea?
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| DQ 21.5 |
What is meant by inclusive fitness? Could an individual’s inclusive fitness be measured?
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| DQ 21.6 |
Often, long-term trends are seen in the fossil record. For example, the body size of a taxonomic group may tend to increase. Can such trends be explained by selection among species?
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| DQ 21.7 |
What is meant by social evolution in microbes?
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| DQ 21.8 |
Sewall Wright proposed his shifting balance theory of evolution to explain how species can evolve toward a global optimum, without being trapped at local fitness peaks. How can we tell whether the shifting balance operates in nature?
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| DQ 21.9 |
Does selection favor high rates of speciation? (See also Chapter 22.)
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