48 results found

Search Results for: loci

Homologous chromosome

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

Polygenic inheritance

Polygenic inheritance refers to the kind of inheritance in which the trait is produced from the cumulative effects of many... Read More

Non-Mendelian Inheritance

Reviewed by: Mary Anne Clark, Ph.D. The inheritance patterns seen in Mendel's monohybrid and dihybrid crosses... Read More

Homozygous

Definition adjective (genetics) Of, or pertaining to an individual (or a condition in a cell or an organism) containing... Read More

Heterozygous

Heterozygous Definition adjective (genetics) Of, or pertaining to an individual (or a condition in a cell or an organism)... Read More

Zygosity

Definition noun (genetics) The degree of similarity or the dissimilarity of the DNA sequences in specific coding segments,... Read More

Heterozygote

Definition noun, plural: heterozygotes A nucleus, cell or organism possessing two different alleles for a particular... Read More

Loci

(noun) Plural form of locus. See locus for definition and additional... Read More

Doubly heterozygous

Doubly heterozygous in the analysis of linkage between two loci, denoting that genotype in which a parent is heterozygous at... Read More

Allogeneic

Allogeneic (Science: genetics, immunology) two or more individuals (or strains) are stated to be allogeneic to one another... Read More

Dihybrid

Definition noun, plural: dihybrids (1) The offspring of a dihybrid cross, i.e. a genetic cross involving two gene loci,... Read More

Homozygote

Definition noun, plural: homozygotes A nucleus, cell or organism where the alleles for a particular gene on each chromosome... Read More

Allelic exclusion

Allelic exclusion (Science: cell biology, genetics) The process whereby one or more loci on one of the chromosome sets in a... Read More

Genetic map

Definition noun (1) A list of ordered genetic loci for a particular genome. (2) A map of the relative positions of genetic... Read More

Epistasis

Definition noun, plural: epistases (genetics) The interaction between nonallelic genes at two or more loci resulting in one... Read More

Polygenic trait

Polygenic trait definition Polygenic trait refers to a trait that is controlled by multiple non-allelic genes. These genes... Read More

Genetic locus

Definition noun, plural: genetic loci The location of a gene (or of a significant sequence) on a chromosome or on a linkage... Read More

Dihybrid cross

Definition noun A genetic cross between individuals with different alleles for two gene loci of interest Supplement Dihybrid... Read More

Isoenzyme

Isozymes (also known as isoenzymes) are enzymes that differ in amino acid sequence but catalyze the same chemical reaction.... Read More

Genetic equilibrium

Definition noun A condition where a gene pool is not changing in frequency because the evolutionary forces acting upon the... Read More

Synergistic effect

Synergistic Effects Definition Synergistic effects (biology definition): the effects when chemical substances or biological... Read More

SELFISH GENE – selfish to persist

What is a selfish gene? A selfish gene is not a gene that makes an individual selfish. In fact, it may even be involved in... Read More

Genetic Constitution

The particular alleles at specified loci present in an... Read More

recombination DNA repair

Recombination DNA Repair Definition Recombination DNA repair is a biological reparative process in response to DNA damage... Read More

Polyploid

Definition noun, plural: polyploids A cell or an organism having a genome with multiple (more than two) sets of homologous... Read More

Heterozygosity

Heterozygosity (Science: genetics) The presence of different alleles at one or more loci on homologous... Read More

Complex locus

Complex locus a set of closely linked genetic loci with a common function, as in the major histocompatibility complex... Read More

Genius

Genius Origin: L. Genius, prop, the superior or divine nature which is innate in everything, the spirit, the tutelar deity... Read More

Gene rearrangement

Gene rearrangement a structural alteration of a chromosome that causes a change in the orderof its... Read More

Genotype

Genotype and Phenotype The contrasting terms genotype and phenotype are used to define the characteristics or traits of an... Read More

Phenotype

Phenotype refers to the observable characteristics of an organism as a multifactorial consequence of genetic traits and... Read More

Map distance

Map distance The degree of separation of two loci on a linkage map, measured in morgans or... Read More

Minute mutant

minute mutant (Science: genetics molecular biology) A class of recessive lethal mutants of drosophila The heterozygotes grow... Read More

Attachment sites

Attachment sites (Science: microbiology molecular biology) particular loci in both bacterial and phage dna molecules at... Read More

Evolution

Reviewed by: Mary Anne Clark, PhD Evolution Definition Evolution (evo‧lu‧tion, ˈɛvəluːʃ(ə)n) is... Read More

Locus

Definition noun, plural: loci (general) A place, space or locality, especially a centre of an activity. (mathematics) The... Read More

Haploid

In biology, haploid pertains to a condition, a cell, or an organism that has half of the usual complete set of chromosomes... Read More

Linkage

Linkage (Science: genetics) tendency for two or more non-allelic genes to be inherited together, because they are located... Read More

Linkage group

Linkage group a set of two or more loci that have been shown by linkage analysis to be physically close in the genome but... Read More

Haemophilia

Definition noun A condition that is characterized by uncontrolled bleeding from the mouth, gums, lips, and tongue,... Read More