Diagram the evolutionary relationships between Neanderthals and chimpanzees based on genomic data
What will be an ideal response?
Answers should resemble Figure 19.15, shown above.
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The dense hairs that cover the leaves of milkweed plants are an example of what type of defense?
A. chemical B. inducible C. phenolic D. mechanical
The five-toed limb of stem reptiles became modified
into a limb __________ in vertebrates that followed. a. suitable for high-speed running b. suitable for digging c. suitable for swimming d. with four fingers and an opposable thumb e. with all of these
Genes carry instructions for
What will be an ideal response?
Pain receptors are activated by tissue damage, but pain perception requires intact, functional neurons. How does this work?
A. The nociceptor neuron only sends action potentials as it is dying. B. The neuron itself does not need to be damaged; it responds to signals released by nearby damaged cells. C. Nociceptor neurons have special membrane repair mechanisms. D. The axon continues to fire action potentials despite damage to the cell body.