In competition between P. caudatum and P. bursaria, neither species goes extinct because they utilize different resources. This can be considered as evidence for
A. the extinction theory.
B. character displacement.
C. the coexistence hypothesis.
D. the competitive exclusion principle.
E. resource partitioning.
E. resource partitioning.
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During endocytosis, if a bacterial cell is not degraded and bacterial DNA is taken up by the eukaryotic cell, what may have occurred?
A. vertical evolution. B. horizontal gene transfer. C. vertical exon shuffling. D. chromosomal duplication and genomic exchange. E. both chromosomal duplication and vertical evolution.
A flower could best be described as which of the following?
A. modified leaves B. modified petals C. modified stems D. primary buds E. incomplete leaves
A central vacuole
a. is found only in plant cells. b. may take up between 50% and 90% of the cell's interior. c. regulates water balance. d. is all of the above.
Describe the six stages of the ovarian cycle that a follicle will go through.
What will be an ideal response?