During meiosis I, homologous chromosomes undergo ______, and crossing-over between nonsister chromatids occurs.
Fill in the blank(s) with the appropriate word(s).
synapsis
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Which class of drugs would be effective against HIV but not against most other pathogenic viruses?
A. Nucleotide analogs that halt replication. B. Receptor antagonists that block viral entry. C. Non-nucleoside reverse transcriptase inhibitors that block reverse transcription. D. Translation inhibitors that stop assembly of viral proteins. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? . Gather Content · What do you already know about HIV replication? 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?
The petals of a flower make up the
a. corolla. b. filament. c. ovule. d. calyx. e. receptacle.
In the alveoli
A. both oxygen and carbon dioxide diffuse into the blood. B. both oxygen and carbon dioxide diffuse out of the blood. C. oxygen diffuses into the blood while carbon dioxide diffuses out of the blood. D. no exchange with the blood occurs. E. oxygen diffuses out of the blood while carbon dioxide diffuses into the blood.
What tissue comprises the outer bark of woody plants?
a. ground tissue b. epidermis c. phloem d. periderm e. xylem