gene (jēn) the biologic unit of heredity, self-reproducing and located at a definite position (locus) on a particular chromosome.
regulator gene
allelic gene allele.
chimeric gene an artificial gene constructed by juxtaposition of fragments of unrelated genes or other DNA segments, which may themselves have been altered.
complementary genes two independent pairs of nonallelic genes, neither of which will produce its effect in the absence of the other.
dominant gene one that is phenotypically expressed when present in homozygotes or heterozygotes.
H gene , histocompatibility gene one that determines the specificity of tissue antigenicity (HLA antigens), and thus the compatibility of donor and recipient in tissue transplantation and blood transfusion.
holandric genes genes in the nonhomologous region of the Y chromosome.
immune response (Ir) genes genes of the major histocompatibility complex that govern the immune response to individual immunogens.
Is genes genes that govern the formation of suppressor T lymphocytes.
lethal gene one whose presence brings about the death of the organism or permits survival only under certain conditions.
mutant gene one that has undergone a detectable mutation.
operator gene one serving as a starting point for reading the genetic code, and which, through interaction with a repressor, controls the activity of structural genes associated with it in the operon.
recessive gene one that produces an effect in the organism only when it is homozygous.
regulator gene , regulatory gene
1. in genetic theory, one that synthesizes repressor, a substance that through interaction with the operator gene switches off the activity of the structural genes associated with it in the operon.
2. any gene whose product affects the activity of other genes.
repressor gene regulator g. (1).
sex-linked gene one carried on a sex chromosome, especially on an X chromosome.
split gene a gene containing multiple exons and at least one intron.
structural gene one that specifies the amino acid sequence of a polypeptide chain.
regulator gene (r g y -l  tr)n. A gene that causes the production of a protein that represses the activity of another gene in an operon. |
regulator gene
[reg′yəlā′tər]
a gene that regulates or suppresses the activity of one or more structural genes. Also called repressor gene.
How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
| ?Page tools | ||
|---|---|---|
|