A researcher collects a soil sample and sequences the entire genomes of two prokaryotes found in the sample
In these genomes, she finds identical prophage DNA located in different areas of the two genomes. Based on the similarity of the sequences of the prophages and their placement in the prokaryotes' genome, what could she conclude concerning the relatedness of the two genomes?
What will be an ideal response?
ANS:
Prophages are viral genomes incorporated into prokaryotic genomes. Such viral infections are random and do not provide any information on the relatedness of the two genomes. Please see Figure 10.12 for an example.
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The oxygen needed by plants for metabolism is
ultimately derived from
a. aerobic respiration. b. photosynthesis. c. anaerobic respiration. d. the atmosphere. e. lightning discharges
In smooth muscle cells, acetylcholine stimulates activation of the enzyme ________, which cleaves ________ to form the second messengers ________ and ________
Fill in the blank with correct word.
ulcer's occur in large intestine and rectum
What will be an ideal response?
When zygosporangia germinate, they must undergo ________ before forming hyphae
A) fertilization B) mitosis C) sporulation D) meiosis