基因英语词汇二

A
alternative splicing -- Eukaryotic genes are composed of exons and introns, the latter being removed by RNA splicing before transcribed mRNA leaves the nucleus. Commonly, a single gene can encode several different mRNA transcripts, caused by cell- or tissue-specific combination of different exons. This is known as alternative splicing.
Annealing -- The time- and temperature-dependent process by which two complementary single-stranded polynucleotides associate to form a double helix (see also hybridization)
Antisense strand -- the DNA strand of a gene which, during transcription, is used as a template by RNA polymerase to synthesize a complementary RNA strand.
反股 -- 意指一股DN**段为基因之所在，因此可用来当做模版使得RNA反转录