The two strands of a DNA molecule contain nitrogen bases which are
A. identical.
B. parallel.
C. complementary.
D. proportionate.
E. random.
C. complementary.
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A study revealed differences in DNA methylation patterns between monozygotic twins, only one of whom was affected by a schizophrenia or bipolar disorder. This suggests a role for ____ in mental illness
Fill in the blank(s) with correct word
What does light absorption trigger during phototaxis?
a. rapid changes in the concentrations of ions, including potassium and oxygen b. rapid changes in the concentrations of ions, including sodium and oxygen c. rapid changes in the concentrations of ions, including sodium and calcium d. rapid changes in the concentrations of ions, including potassium and calcium
By weight, the bulk of a plant's organic material is derived from:
a) atmospheric nitrogen. b) soil minerals. c) carbon dioxide. d) water. e) oxygen.
Glittering wood-moss (Hylocomium splendens) is a species of moss that can be found in Alaska and Canada. Based on what you know about mosses, what is likely true of the female gametes of glittering wood-moss?
A. They are produced when the gametophyte undergoes meiosis. B. They are smaller than the male gametes. C. They are haploid. D. They are housed in archegonia. E. They lack flagella.