While studying the plant Arabidopsis, a botanist finds that an RNA probe produces colored spots in the sepals of the plant. From this information, what can be inferred?
a. The differently colored plants will attract different pollinating insects.
b. The RNA probe is transported only to certain tissues.
c. The colored regions were caused by mutations that occurred in the sepals.
d. The RNA probe is specific to a gene active in sepals.
e. More research needs to be done on the sepals of Arabidopsis.
Ans: d. The RNA probe is specific to a gene active in sepals.
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a. Archaea b. cyanobacteria c. proteobacteria d. green bacteria e. Gram-positive bacteria
What is the process through which many animals develop irreversible species-specific behavior patterns?
A. cognitive learning B. operant conditioning C. altruism D. imprinting E. taxis
A cyst formed by a protist functions
A. as a protective mechanism against adverse changes in the environment. B. in transfer from one host to the next. C. in repair of damage to the cell envelope. D. as a protective mechanism against adverse changes in the environment and in transfer from one host to the next.
The breast cancer gene BRCA1 has a very similar sequence in humans, mice, and gorillas, due to its origination in a common ancestor. The BRCA1 genes in these species are examples of __________________.
A. orthologs B. paralogs C. polyploidy D. synteny Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about homology? Consider Possibilities · Consider the different answer options. Which can you rule out? 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?