base of stapes
base of stapes n.
The flat portion of the stirrup of the ear that fits in the oval window between the middle and inner ear. Also called footplate.
- Base on
the bottom support of anything; that on which a thing stands or rests: a metal base for the table. a fundamental principle or groundwork; foundation; basis: the base of needed reforms. the bottom layer or coating, as of makeup or paint. Architecture. the distinctively treated portion of a column or pier below the shaft or […]
- Base pair
any of the pairs of the hydrogen-bonded purine and pyrimidine bases that form the links between the sugar-phosphate backbones of nucleic acid molecules: the pairs are adenine and thymine in DNA, adenine and uracil in RNA, and guanine and cytosine in both DNA and RNA. base pair n. The pair of nitrogenous bases that connects […]
- Base pairing
the process of binding separate DNA sequences by base pairs. noun (biochem) the hydrogen bonding that occurs between complementary nitrogenous bases in the two polynucleotide chains of a DNA molecule base-pairing The hydrogen bonding of complementary nitrogen bases, one purine and one pyrimidine. Base-pairing occurs between the complementary strands of a DNA molecule or a […]
- Base-pairing rules
constraints imposed by the molecular structure of DNA and RNA on the formation of hydrogen bonds among the four purine and pyrimidine bases such that adenine pairs with thymine or uracil, and guanine pairs with cytosine.