base pair

1 of 2

noun

plural base pairs
: one of the pairs of nucleotide bases on complementary strands of nucleic acid that consist of a purine on one strand joined to a pyrimidine on the other strand by hydrogen bonds holding together the two strands much like the rungs of a ladder and that include adenine linked to thymine in DNA or to uracil in RNA and guanine linked to cytosine in both DNA and RNA

base pair

2 of 2

verb

variants or base-pair
base paired or base-paired; base pairing or base-pairing; base pairs or base-pairs

intransitive verb

: to participate in formation of a base pair
adenine base-pairs with thymine

Examples of base pair in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
For researchers drumming up a brand-new genome, the fabrication itself isn’t the hard part; scientists already know how to assemble DNA base pairs into strings. Quanta Magazine, 4 Nov. 2024 When samples reach the age of something like a Neanderthal, very few fragments are longer than 100 base pairs. John Timmer, Ars Technica, 11 July 2024 This allows scientists to read DNA sequences thousands of base pairs long to accurately capture where repetitive stretches are located. Laura Baisas, Popular Science, 5 Sep. 2024 The rate of evolution leading to changes in amylase gene copy number was about 10,000 times faster than that of single DNA base pair changes in the human genome. Laura Baisas, Popular Science, 5 Sep. 2024 See all Example Sentences for base pair 

Word History

First Known Use

Noun

1955, in the meaning defined above

Verb

1959, in the meaning defined above

Time Traveler
The first known use of base pair was in 1955

Dictionary Entries Near base pair

Cite this Entry

“Base pair.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/base%20pair. Accessed 29 Nov. 2024.

Medical Definition

base pair

1 of 2 noun
: one of the pairs of nucleotide bases on complementary strands of nucleic acid that consist of a purine on one strand joined to a pyrimidine on the other strand by hydrogen bonds holding together the two strands much like the rungs of a ladder and that include adenine linked to thymine in DNA or to uracil in RNA and guanine linked to cytosine in both DNA and RNA

base pair

2 of 2 intransitive verb
variants or base-pair
: to participate in formation of a base pair
adenine base pairs with thymine
Last Updated: - Updated example sentences
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