Search Results for: frequency
Allele frequency
Definition noun, plural: allele frequencies The frequency of an allele relative to that of other alleles of the same gene in... Read More
Darwinian fitness
Darwinian Fitness Definition Darwinian fitness refers to the measure of an individual organism's or genotype's reproductive... Read More
Genetic drift
Genetic Drift Definition What is genetic drift in simple terms? The simple definition of genetic drift ( also referred to... Read More
Frequency of occurrence
Frequency of occurrence The number of times a given event occurs at specified sample points during a defined... Read More
Neutral mutation
Neutral Mutation Definition What is a neutral mutation? Neutral mutations are the alterations in the DNA that are... Read More
Phenotypic ratio
Phenotypic Ratio Definition How would one define phenotypic ratio? The correlation between the amount of offspring that... 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
Natural selection
Natural Selection Definition What is natural selection in biology? Natural selection is defined as a process in nature... Read More
Infradian rhythm
What is the Infradian Rhythm? An infradian rhythm is a type of biological rhythm that lasts longer than 24 hours, with a... Read More
Genetic diversity
Genetic Diversity Definition Each species is composed of individuals with their own set of genes. A gene is the inheritance... Read More
Sexual selection
What is Sexual Selection? The definition of sexual selection is very interesting in biological terms. The sexual selection... Read More
Ventilation
Ventilation Definition Often when persons think of ventilation, they think of getting clean or enough air into a room. This... Read More
Sensory Systems
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal and... Read More
The biology of how the brain forgets
Our brain tends to forget things that we wish we would always remember. And yet, it cannot forget certain things we wish... Read More
Physical Development in Humans
The Newly Born Child Depending on the nutrients available to the child within pregnancy and the genetic makeup of the... Read More
Respiration rate
Respiration Rate Definition Respiration rate is a vital life process that expresses the breathing rate in an organism... Read More
Hardy-Weinberg principle
Definition noun A principle stating that both allele and genotype frequencies in a randomly-mating population remain... Read More
Hardy-Weinberg law
Definition noun A principle stating that both allele and genotype frequencies in a randomly-mating population remain... Read More
Hardy-Weinberg equilibrium
Definition noun A principle stating that both allele and genotype frequencies in a randomly-mating population remain... Read More
Abiotic factor
An abiotic factor is a non-living element of the environment that influences the way organisms and ecosystems function. Some... Read More
Hypertrophy
Hypertrophy Definition Hypertrophy refers to the enlargement or increase in the size of an organ or tissue due to the... 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
Phenotype frequency
A ratio stating the number of times a specific phenotype occurs in a population in a single... 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
Genetic equilibrium
Definition noun A condition where a gene pool is not changing in frequency because the evolutionary forces acting upon the... Read More
Gene amplification
Definition noun, plural: gene amplifications The process of duplicating a particular gene, causing the gene to increase in... Read More
Chemokinesis
Definition noun A behavioral response of a cell or an organism to a soluble chemical that leads to random or directionally... Read More
Density dependent factor
Density-dependent factors are the limiting factors of an ecosystem that regulate population growth in a density-dependent... Read More
Undulatory
undulatory moving in the manner of undulations, or waves; resembling the motion of waves, which successively rise or swell... 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
Polyploidy
Reviewed by:Â Mary Anne Clark, Ph.D. Polyploidy Polyploidy is defined as the state of being polyploid, which... Read More
Indicator Species and Endangered Species
Indicator Species Certain species are capable of expressing characteristics that can indicate the state of the ecosystem... Read More
