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gene Related Biological Terms:

transgene

DNA that has been experimentally introduced into a transgenic animal.

tumour suppressor gene

(= anti-oncogene (tumour suppressor gene))

unnatural amino acid mutagenesis

A method for replacement of an amino acid residue of a protein with a non-naturally occurring amino acid. The mRNA that encodes the protein is modified to encode a nonsense suppressor codon. For example, mRNA is modified to use the UAG codon; this mRNA, together with a nonsense suppressor tRNA with the anticodon CUA, and with an unnatural amino acid at its 3'-end, is introduced into an expression system, possibly a Xenopus oocyte. Nowak, M.W., Kearney, P.C., Sampson, J.R., et al. (1995) Science 268, 439-442 Learn more about amino acid chart.

abiogenesis

Spontaneous generation of life from nonliving material.

additive genetic effects

When the combined effects of alleles at different loci are equal to the sum of their individual effects.

additive genetic variance

Genetic variance associated with the average effects of substituting one allele for another.

allogeneic

To be genetically dissimilar within the same species.

allogeneic antigen

Genetic variations of the same antigens within the same species.

allogeneic graft

Grafts between two or more individuals allogeneic at one or more loci (usually with reference to histocompatibility loci). As opposed to autograft and xenograft.

alternation of generations

The alternation of gametophyte and sporophyte stages in the life cycle of a plant.

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