If species are competing for the same resource, one species is likely to go extinct through competitive exclusion, or natural selection will drive the evolution of
A. prezygotic isolating mechanisms.
B. hybrids.
C. character displacement.
D. polyploid individuals.
C. character displacement.
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The primary spermatocyte is cell number
a. 2. b. 3. c. 4. d. 5. e. 6.
Why might phylogeny based on physical characteristic in adults provide an inaccurate evolutionary history?
A. adult anatomy isn't strongly influenced by natural selection B. convergent evolution produces similar traits in unrelated species C. adult anatomy is too variable within a species D. producing offspring may affect the development of future traits
Classification.Respond to the following statements with reference to the fruit types listed below.
A. The wall of this type of fruit splits along a seam to release the seeds inside when they are mature. B. A strawberry is an aggregate of many of these types of fruits. C. This is a fleshy fruit with one seed enclosed by a hard pit. D. This fleshy fruit often has many seeds and no pit. E. This is a fleshy fruit in which tissues derived from the receptacle enclose a core derived from the ovary wall.
The uniformity in the way nerve cells function within the animal kingdom
A) indicates that the peripheral nervous system (PNS) evolved before the central nervous system (CNS). B) is evidence that the neuron was an early evolutionary adaptation. C) is proof of neurotransmitter efficiency. D) must have prevented the development of diversity.