Which best describes STRs?
a. a piece of non-coding DNA that consists of 9–80 repeating sequences of base pairs
b. a piece of coding DNA that consists of 9–80 repeating sequences of base pairs
c. a piece of coding DNA consisting of 2–5 repeating sequences of base pairs
d. a piece of non-coding DNA consisting of 2–5 repeating sequences of base pairs

Option- B

The correct answer is: D. a piece of non-coding DNA consisting of 2–5 repeating sequences of base pairs.

Explanation:

STRs, abbreviated from Short Tandem Repeat, are microsatellites: sequences of non-coding DNA that repeat units that are 2 to 5 base pairs in length. The number of repetitions of these sequences varies from people to people, which gives it a significant importance in the fields of forensics, where is used to identify a person.

Non-coding DNA is a sequence that will not translate into any protein. Half of our DNA is made of non-coding DNA.

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good lesson

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u