Search Results for: allele
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
Incomplete dominance
Incomplete Dominance Definition After Gregor Mendel discovered inheritance laws, the term ''incomplete dominance'' was... Read More
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
Complete dominance
Complete Dominance Definition Genetics is the study of how traits are inherited by organisms and in what ways these... 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
Genetic drift
Genetic Drift Definition What is genetic drift in simple terms? The simple definition of genetic drift ( also referred to... 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
Homozygous
Homozygous Definition Diploid organisms that have a genotype of identical alleles for a trait or phenotype at a specific... 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
Phenotypic ratio
Phenotypic Ratio Definition How would one define phenotypic ratio? The correlation between the amount of offspring that... Read More
Pleiotropy
Pleiotropy Definition When one single gene starts affecting multiple traits of living organisms, this phenomenon is known... Read More
Independent Assortment
Independent Assortment Definition Independent assortment refers to the alleles or genes that sort into the newly formed... 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
Silent allele
silent allele --> amorph 1. (Science: genetics) A gene which is inactive. Thus, an amorphic gene. 2. (Science: cell... Read More
Monogenic trait
Definition noun A trait produced by the effect of a gene or an allele Supplement A monogenic trait is a trait produced... 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
Polygenic inheritance
Polygenic inheritance refers to the kind of inheritance in which the trait is produced from the cumulative effects of many... 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
Lethal mutation
Lethal Mutation Definition Genetic mutations come from changes in the DNA structure or sequencing in an organism. Often... Read More
Genotypic ratio
Genotypic Ratio Definition To understand 'Genotypic ratio', let us first understand the terms: 'Genotype' and 'Phenotype'.... Read More
Gene conversion
Definition noun A nonreciprocal gene transfer in which an allele converts the other allele into the same form as its self,... Read More
Law of Dominance
Definition noun (genetics) Gregor Mendel's law stating that when two alleles of an inherited pair is heterozygous, then,... Read More
Inheritance and Probability
Reviewed by: Mary Anne Clark, Ph.D.Gregor Mendel, an Austrian monk, is most famous in this field for his study... Read More
Heterozygote
Definition noun, plural: heterozygotes A nucleus, cell or organism possessing two different alleles for a particular... Read More
Monogenic inheritance
Definition noun A form of inheritance that follows Mendel's Law of Heredity Supplement Monogenic inheritance refers to the... Read More
Darwinian fitness
Darwinian Fitness Definition Darwinian fitness refers to the measure of an individual organism's or genotype's reproductive... Read More
Inherited traits
What are Inherited Traits? The characteristics or traits that are passed from parents to offspring are known as inherited... Read More
Overdominance
Definition noun (genetics) A type of dominance characterized by a phenotype that is more pronounced in a heterozygote... Read More
Heterozygous
Heterozygous Definition adjective (genetics) Of, or pertaining to an individual (or a condition in a cell or an organism)... Read More
Pseudodominance
Definition noun (genetics) The manifestation of a recessive trait, mimicking an inheritance of a dominant... Read More
Independent Assortment and Crossing Over
Reviewed by: Mary Anne Clark, Ph.D.The previous tutorial investigates the process of meiosis, where... Read More
