A tiny loop of double-stranded DNA describes a
(a) bacterium.
(b) DNA ligase.
(c) plasmid.
(d) antibiotic.
(c) plasmid.
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Biological evolution according to Darwin and Wallace states that
a. organisms produce numerous offspring, but environmental factors limit the number of reproducing survivors. b. heritable variations allow some individuals to outcompete others. c. the offspring of successful individuals inherit the favorable characteristics of their parents. d. a and b e. a, b, and c
The main benefit to a plant from a mycorrhizal association is
a. enhanced water uptake. b. removal of excess carbohydrates. c. enhanced flow of carbohydrates to the roots. d. enhanced mineral ion uptake. e. enhanced protection of roots from bacterial infections.
Four of the five answers listed below are the
results of fertilization. Select the EXCEPTION.
a. fruit b. seed c. embryo d. pollen e. endosperm
According to the ________ principle, a muscle cell contracts completely when adequately stimulated by a motor neuron
Fill in the blank(s) with correct word