Molecular biology

Molecular biology

Contributors in Molecular biology

Molecular biology

The phenomenon of a hormone-responsive cell having more receptors capable of binding the hormone than are needed to effect a maximal response; possibly an adaptation that makes the cell responsive to ...

Ames test (Salmonella test)

Biology; Biochemistry

A test for mutagenicity and carcinogenicity which uses specially constructed bacterial strains, by screening the effects of test compounds for their ability to produce reverse mutations that will ...

heteroduplex mapping

Biology; Biochemistry

An electron microscopic technique that compares sequence relationships of two polynucleotides, e.g. a spliced eukaryotic mRNA with a coding strand of DNA. Introns of the DNA strand appear as D-loops ...

transposon

Biology; Biochemistry

One of a class of genes that are capable of moving spontaneously from one chromosome to another, or from one position to another in the same chromosome; also known as a jumping gene or a transposable ...

attenuation

Biology; Biochemistry

The response of the synthesis of bacterial mRNA to the nutritional state of the organism, e.g. the decrease in transcription of the trp operon in the presence of tryptophan, which is due to the ...

correlation time

Biology; Biochemistry

In electron spin resonance and nuclear magnetic resonance spectroscopy, a time constant for the interaction of an observed species with its environment, often related to the rate of decay of its ...

balanced polymorphism

Biology; Biochemistry

The result of selective pressures for and against a deleterious mutation that permits it to persist in a population. An example is the stable presence in Africa of the sickle cell gene due to the ...