The molecules used as molecular scissors in genetic engineering are
A. exonucleases.
B. proteases.
C. restriction enzymes.
D.
RNA polymerases.
C
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Red algae:
a. can live at greater depths than green algae b. are thought to have developed from green algae c. contain xanthophylls as their main accessory pigments d. contain no chlorophyll a e. are mostly freshwater algae
Explain how a hormone will trigger the signal transduction pathway in a plant.
What will be an ideal response?
Which of the following is a potential risk of exotic species?
a) introduction of new diseases b) native species being outcompeted c) alteration of habitats d) all of these are potential risks
If a population undergoes selection of adaptive
traits, it most logically will lead to ___ of the species.
a. extinction b. improvement c. artificial selection d. evolution e. more than one of these