Examlex
Choose the one alternative that best completes the statement or answers the question.
-Decide if the events A and B are mutually exclusive or not mutually exclusive. A date in Philadelphia is selected.
A: It rains that day.
B: It snows that day.
Chemical Elements
Substances that cannot be broken down into simpler substances by chemical means, consisting of atoms with the same number of protons.
Helixes
Three-dimensional spirals, like those found in DNA structures or certain proteins, characterized by a uniform shape that twists around a central axis.
Thymine
A nitrogenous base found in DNA, pairing with adenine in the structure of the DNA molecule.
Cytosine
Cytosine is one of the four main bases found in DNA and RNA, pairing with guanine in the genetic code.
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