Search Results for: heterochromatin
Constitutive heterochromatin
Definition noun Regions on chromosomes that are condensed permanently, genetically inactive, and always in the same position... Read More
Heterochromatin
Definition noun Highly condensed, tightly packed form of chromatin, as opposed to the lightly packed... Read More
Facultative heterochromatin
Definition noun Heterochromatin that may lose its condensed state and becomes genetically active Supplement Heterochromatin... Read More
Constitutive heterochromatin banding
Definition noun (cytogenetics) A selective banding technique wherein a banding pattern is produced in the constitutive... Read More
Centromere
Centromere Definition Centromere is defined as the point of attachment for the sister chromatids generated after DNA... Read More
Euchromatin
Definition noun A slightly packed or partially condensed form of chromatin that contains structural genes and is usually... Read More
Giemsa banding
Definition noun (cytogenetics) A chromosome staining technique that employs Giemsa stain in order to produce a... Read More
Sister chromatids
Sister Chromatids Definition Sister chromatids are defined as the two identical copies of a single replicated chromosome... Read More
Quinacrine banding
Definition noun (cytogenetics) A chromosome banding method that treats chromosomes with quinacrine dihydrochloride to reveal... Read More
Chromosome
Chromosomes Definition Chromosomes are thread-like structures present in the nucleus of plant and animal cells. Chromosomes... Read More
Satellite DNA
Definition noun, plural: satellite DNAs (molecular biology) A portion of the DNA of a genome consisting of tandemly... Read More
Tandem repeat
Definition noun, plural: tandem repeats (molecular biology) A type of repeated sequence in which the copies are repeated one... Read More
Transcriptional silencing
transcriptional silencing (Science: molecular biology) mechanism of transcriptional control where dNA is bundled into... Read More
Acrocentric chromosome
Definition noun, plural: acrocentric chromosomes A chromosome whose centromere is subterminal resulting in its q arms being... Read More
Nucleosome
Nucleosome Definition Every organism is made of deoxyribonucleic acid, also known as DNA. DNA is made up of numerous... Read More
Plasma B cell
Definition noun, plural: plasma B cells A large B lymphocyte that when exposed to antigen, produce, and secrete large... Read More
Nucleolar organizer region banding
Definition noun (cytogenetics) A chromosome banding method that employs silver staining to preferentially stain the... Read More
Telocentric chromosome
Definition noun, plural: telocentric chromosomes A chromosome whose centromere is placed very close to the end of the... Read More
Reverse banding
Definition noun (cytogenetics) A chromosome banding method that employs Giemsa staining technique that produces bands... Read More
Submetacentric chromosome
Definition noun, plural: submetacentric chromosomes A chromosome with a centromere located sub-median resulting in slightly... Read More
Y chromosome
Y chromosome Definition The Y chromosome constitutes one member of the pair of sex chromosomes within an organism, a common... Read More
Arrhenotoky
Definition noun A form of parthenogenesis wherein male offspring develops from an unfertilized... Read More
Subtelocentric chromosome
Definition noun, plural: subtelocentric chromosomes A chromosome whose centromere is placed near the end rather than the... Read More
Metacentric chromosome
Definition noun, plural: metacentric chromosomes A chromosome in which the centromere is located in the middle resulting in... Read More
Holocentric chromosome
Definition noun, plural: holocentric chromosomes A chromosome in which the entire length of the chromosome seems to act as a... Read More