Search Results for: locus
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
Homozygous
Homozygous Definition Diploid organisms that have a genotype of identical alleles for a trait or phenotype at a specific... Read More
Multiple alleles
Alleles are the pairs of genes occupying a specific spot called locus on a chromosome. Typically, there are only two alleles... 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
Non-Mendelian Inheritance
Reviewed by: Mary Anne Clark, Ph.D.The inheritance patterns seen in Mendel's monohybrid and dihybrid crosses... Read More
Codominance
Codominance Definition Codominance is a form of inheritance wherein the alleles of a gene pair in a heterozygote are fully... 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
Actions of Caffeine in the Brain with Special Reference to Factors That Contribute to Its Widespread Use
IV. Actions of Caffeine on Brain Functions and BehaviorHaving discussed the molecular and neuronal actions of caffeine,... Read More
Neuromelanin
Definition noun A type of melanin pigment present in parts of the brain, particularly in the neurons of substantia nigra and... Read More
Phenotypic ratio
Phenotypic Ratio Definition How would one define phenotypic ratio? The correlation between the amount of offspring that... 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
Somatotroph
Definition noun, plural: somatotrophs The hormone-secreting cell in the anterior pituitary that particularly releases... Read More
Law of Segregation
Mendel’s Laws of Inheritance The father of genetics, Gregor Mendel, reported his findings in 1860 that initially were... 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
Incomplete dominance
Incomplete Dominance Definition After Gregor Mendel discovered inheritance laws, the term ''incomplete dominance'' was... Read More
Monohybrid cross
Definition noun A genetic cross between homozygous individuals but with different alleles for a single gene locus of... Read More
Sex-linked trait
Definition of Sex-Linked Traits A sex-linked trait is an observable characteristic of an organism that is influenced by the... Read More
Chromosomal mutation
Every living thing is made up of DNA. Our DNA is what makes us unique and different in the world. Our DNA is made up of... Read More
Consciousness and Behavior
States of Consciousness Defined either by (1) behavior - ranging from attentive and alert to coma and (2) electrical... Read More
Genetic Control – On and Off Genes
Reviewed by: Mary Anne Clark, Ph.D.This lesson looks at the various factors involved that affect growth and... Read More
Inhibitory postsynaptic potential
Inhibitory Postsynaptic Potential Definition An inhibitory postsynaptic potential is a type of synaptic potential. It is... Read More
Nervous System
THE is the most complicated and highly organized of the various systems which make up the human body. It is the... Read More
Heterozygous
Heterozygous Definition adjective (genetics) Of, or pertaining to an individual (or a condition in a cell or an organism)... Read More
Parthenogenesis
To reproduce, by definition, means to produce new offspring. The process is referred to as reproduction, which is one of the... Read More
Locomotion
Definition noun The ability of cells or organisms to move and propel itself from place to place Supplement Locomotion in... Read More
Linkage map
Definition noun A genetic map showing the relative positions of genetic markers along a chromosome that is determined by... Read More
Flanking region
Flanking region (Science: molecular biology) The dna sequences extending on either side of a specific locus or... Read More
Neutral mutation
Neutral Mutation Definition What is a neutral mutation? Neutral mutations are the alterations in the DNA that are... Read More