Identify and briefly explain the four premises of evolution by natural selection, as proposed by Charles Darwin. What will be an ideal response?
1. Individuals of a population exhibit variation in traits.
2. Overproduction of species progeny. More offspring produced than can survive.
3. Limits on population growth by limited resources.
4. Differential reproductive success: those individuals with traits that can take advantage of
resources will produce more offspring for the next generation
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The same basic internal organs (kidneys, stomach, heart, lungs) are found in frogs, birds, snakes, and rodents. This is primarily an example of _____
A) structural homology B) developmental homology C) genetic correlation D) inheritance of acquired characteristics
DNA has no sulfur, and proteins have no phosphorus
Indicate whether the statement is true or false
Which is the normal direction in which the nerve impulse flows?
A. axon—soma—dendrite B. dendrite—soma—axon C. soma—dendrite—axon D. dendrite—synapse—axon
All the populations of all the different species interacting with one another in the same environment is called
A. predation. B. symbiosis. C. diversity. D. an ecosystem. E. a community.