perinatal. relating to the period shortly before and after birth; the actual time varies between species. The last 10 to 15% of the pregnancy before parturition to the end of a comparable period after birth would cover present usage of the term. perinatal mortality. the percentage of animals in the danger period which die, as a ratio of the total number exposed.
Normal Gene Tumor Suppressor Gene Is nicknamed the Guardian of the Genome.. Can arrest the cell cycle, trigger apoptosis or senescence, and repair DNA. Chromosome 17 Cell Survival Produces a protein called tumor protein p53, which regulates cell division.
Regulator gene. From Wikipedia, the free encyclopedia. A regulator gene, regulator, or regulatory gene is a gene involved in controlling the expression of one or more other genes. A regulator gene may encode a protein, or it may work at the level of RNA, as in the case of genes encoding microRNAs. In prokaryotes, regulator genes often code for repressor proteins. Repressor proteins bind to operators or promoters, preventing RNA polymerase from transcribing RNA.