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U.S. Department of Energy
行业: Government
Number of terms: 22108
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An allele that is almost always expressed, even if only one copy is present. See also: gene, genome.
Industry:Biology
The process in which the genetic code carried by mRNA directs the synthesis of proteins from amino acids. See also: transcription.
Industry:Biology
See: oligonucleotide.
Industry:Biology
See: cloning vector.
Industry:Biology
One gene interfers with or prevents the expression of another gene located at a different locus..
Industry:Biology
The probability of a gene or genetic trait being expressed. "Complete" penetrance means the gene or genes for a trait are expressed in all the population who have the genes. "Incomplete" penetrance means the genetic trait is expressed in only part of the population. The percent penetrance also may change with the age range of the population..
Industry:Biology
A technique used in model organism studies in which embryos at the 8-cell stage of development are pushed together to yield a single embryo (used as an alternative to microinjection). See also: model organisms.
Industry:Biology
Alternative form of a genetic locus; a single allele for each locus is inherited from each parent (e.g., at a locus for eye color the allele might result in blue or brown eyes). See also: locus, gene expression.
Industry:Biology
A map of the locations of identifiable landmarks on DNA (e.g., restriction-enzyme cutting sites, genes), regardless of inheritance. Distance is measured in base pairs. For the human genome, the lowest-resolution physical map is the banding patterns on the 24 different chromosomes; the highest-resolution map is the complete nucleotide sequence of the chromosomes..
Industry:Biology
Autonomously replicating extra-chromosomal circular DNA molecules, distinct from the normal bacterial genome and nonessential for cell survival under nonselective conditions. Some plasmids are capable of integrating into the host genome. A number of artificially constructed plasmids are used as cloning vectors..
Industry:Biology
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