The authors of your textbook described two ways in which the strength of selection can be measured. What are these two ways?
What will be an ideal response?
selection differential; selection gradient
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Archaea and bacteria are involved in which of the following cycles? (Select all correct choices.)
A. the nitrogen cycle B. the carbon cycle C. the sulfur cycle
If a scientist can only observe a population’s phenotypes, which frequencies of genotypes can they know?
a. both homozygous dominant and recessive b. only homozygous dominant c. only homozygous recessive d. both homozygous and heterozygous
Four of the following are modern apes. Which is not a modern ape?
A. Gibbon B. New World monkey C. Chimpanzee D. Gorilla E. Orangutan
Horizontal rows of parenchymal cells that transport materials horizontally are called?
A. tracheids B. fibers C. sieve tubes D. rays E. vessel elements