In a flowering plant life cycle, which of the following structures are diploid?
a. megaspores
b. male gametophytes
c. eggs
d. sporophytes
e. sperm cells
ANSWER: d
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An extensive study was conducted on identical twins who were separated at birth. Among other things, the study showed that the individual from each pair who received better nutrition during childhood tended to score higher on standardized intelligence tests. This can best be described as an example of how
A. mutation alters phenotype. B. environment alters phenotype. C. environment alters genotype. D. mutation alters genotype. E. pleiotropic genes affect more than one trait. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about genotype and phenotype? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Some Streptomyces spp. can biosynthesize several chemically unrelated structures that act as different antibiotics
Indicate whether the statement is true or false.
A yellow jacket, an insect in the order hymenoptera, stung me. A wasp, an insect in hymenoptera, stung me. A hornet, an insect in hymenoptera, stung me. I see a pattern. All insects in this order must have stingers. What type of reasoning does this represent?
A. inductive reasoning B. deductive reasoning C. reductionism D. comparative reasoning
The dry region on the ____ side of mountains is referred to as a rain shadow
a. usually moisture-laden b. windswept c. highest d. windward e. leeward