244 results found

Search Results for: sequence

Sequence tagged sites

sequence-tagged site (Science: molecular biology) short tagged tracts of dNA sequence (200 to 500 base pairs) that is... Read More

Signal sequence

Definition noun A sequence of amino acid residues bound at the amino terminus of a nascent protein during protein... Read More

Frameshift mutation

Define Frameshift Mutation What is a frameshift mutation? In biology, insertions or deletions of nucleotides in the coding... Read More

Codon

What does codon mean? A codon, in biology, is the basic genetic unit of life that acts as the template for the amino acid... Read More

Conserved sequence

Conserved sequence (Science: molecular biology) a base sequence in a dna molecule (or an amino acid sequence in a protein)... Read More

Dna sequence analysis

Dna sequence analysis (Science: molecular biology) determination of the nucleotide Sequence of a length of dna. Typically,... Read More

Leader sequence

Definition noun (1) 5' UTR (five prime untranslated region); the section of mRNA and DNA beginning at the +1 position up to... Read More

Genetic Information and Protein Synthesis

Genetic Code Genes are sequences of DNA nucleotides that carry and transmit the information specifying amino acid sequences... Read More

Chromosome Mutations – II

Reviewed by: Mary Anne Clark, Ph.D. This page is a continuation of the previous tutorial, Chromosome Mutations... Read More

Amino acid sequence

Amino acid sequence The sequence of amino acids as arrayed in chains, sheets, etc., within the protein molecule. this is... Read More

Consensus sequence

Consensus sequence Of a series of related dna, rna or protein sequences, the sequence that reflects the most common choice... Read More

Carbohydrate sequence

Carbohydrate sequence The sequence of carbohydrates within polysaccharides, glycoproteins, and... Read More

Signature sequence

signature sequence short oligonucleotides of unique sequence found in 16S ribosomal RNA of a particular group of... Read More

Sequence homology

sequence homology (Science: molecular biology) Strictly, refers to the situation where nucleic acid or protein sequences are... Read More

Genetic Mutations

Reviewed by: Mary Anne Clark, Ph.D. Genetic Mutations Genetic mutations are inherited variations in an... Read More

Intervening sequence

Intervening sequence (Science: molecular biology) alternative but uncommon name for an... Read More

Mutagen

Mutagen Definition What is a mutagen? A mutagen is a substance or agent that causes DNA impairment that results in the... Read More

Role of Golgi Apparatus & Endoplasmic Reticulum in Protein Synthesis

Continued from the previous tutorial that introduces protein synthesis... mRNA and tRNA mRNA leaves the nucleus and enters... Read More

Sequence

sequence The noun: the order in which subunits appear in a chain, such as amino acids in a polypeptide or nucleotide bases... Read More

Shine-dalgarno sequence

shine-dalgarno sequence A short stretch of nucleotides on a prokaryotic mRNA molecule upstream of the translational start... Read More

Unique Sequence

A genetic sequence of DNA that is unique, and therefore does not appear anywhere else in the... Read More

Mutation

Mutation is a permanent, heritable change in the nucleotide sequence or the process by which such a change occurs in a gene... Read More

Pribnow box

Pribnow box --> promoter (Science: molecular biology) A region of dNA to which rNA polymerase binds before initiating the... Read More

Transcription (biology)

In biology, transcription is the process of transcribing or making a copy of the genetic information stored in a DNA strand... Read More

Translation

In biology, translation is a step in protein biosynthesis where a genetic code from a strand of mRNA is decoded to produce a... Read More

A new wrinkle in evolution — Man-made proteins

Nature, through the trial and error of evolution, has discovered a vast diversity of life from what can only presumed to... Read More

Protein

Protein Definition Proteins are biomolecules comprised of amino acid residues joined together by peptide bonds.... Read More

Homologous chromosome

A homologous chromosome pertains to one of a pair of chromosomes with the same gene sequence, loci, chromosomal length, and... Read More

Ribonucleic acid

Ribonucleic Acid Definition noun (uncountable), ribonucleic acids ri·bo·nu·cle·ic ac·id, raɪboʊnjuːkliːɪk... Read More

Allele

Allele Definition What are alleles? An allele is a term coined to describe a specific copy of a gene. Genes, the DNA... Read More

Insertion (genetics)

In genetics, insertion refers to the type of mutation characterized by the insertion of one or few nucleotide base pairs to... Read More

Repeated sequences

Definition noun (molecular biology) Multiple copies of nucleotide sequences in the nucleic acids (i.e. DNA or RNA)... Read More

Intron

Definition noun, plural: introns (molecular biology) A noncoding, intervening sequence of DNA within a gene that is... Read More

Missense mutation

Definition noun, plural: missense mutations A form of point mutation resulting in a codon that codes for a different amino... Read More

Complementary DNA

Definition noun A double stranded DNA produced from the messenger RNA synthesis in a reaction catalyzed by an enzymes... Read More

Polymorphism

Polymorphism Definition The occurrence of two or more different forms or morphs in the population of a species is referred... Read More

Anabolism

Anabolism Definition Metabolic processes involve the conversion of one molecule into another through a sequence of chemical... Read More

Variable region

variable region --> V region (Science: molecular biology) Those regions in the amino acid sequence of both the heavy and... Read More

Nonsense mutation

Definition noun, plural: nonsense mutations A form of point mutation resulting in a nonsense codon that does not code for an... Read More

Silent mutation

Definition noun, plural: silent mutations A form of point mutation resulting in a codon that codes for the same or a... Read More