In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Q: Question: What occurs when an unstable nucleus emits a beta particle and energy? Answer: beta decay

A: Beta decay occurs when an unstable nucleus emits a beta particle and energy.
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Q: Question: According to the english system measurement, how much is equal to 2 pints, 1 quart, and of a gallon? Answer: 4 cups

A: According to the english system measurement, 4 cups much is equal to 2 pints, 1 quart, and of a gallon.
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Q: Question: Differences between organisms reflect differences between their nucleotide sequences rather than between their what? Answer: genetic codes

A:
Differences between organisms reflect differences between their nucleotide sequences rather than between their genetic codes.
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