The observed "puffs" in the polytene chromosomes of Drosophila are sites of

A) attenuation.
B) condensation.
C) induction.
D) transcription.
E) translation.


Answer: D

Biology & Microbiology

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The endosymbiotic theory says that precursor eukaryotic cells acquired cilia by endosymbiosis with a(n) ________ ancestor and others gained photosynthetic ability from endosymbiosis with a(n) ________ ancestor.

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Which environment would be most likely to produce trees without annual rings?

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When a cell is placed in an isotonic solution, water molecules will cross the cell membrane.

A) True B) False

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The large seaweed known as kelp is classified as a member of the

A) Chlorophyta. B) Phaeophyta. C) Chrysophyta. D) Rhodophyta. E) Deuteromycete.

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