62 results found

Search Results for: recessive trait

Dominant

Dominant Definition The word dominant or dominant trait is commonly used in biology. The general meaning of dominant is to... Read More

Phenotype

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

Law of Segregation

Mendel’s Laws of Inheritance The father of genetics, Gregor Mendel, reported his findings in 1860 that were initially... Read More

Incomplete dominance

Incomplete Dominance Definition After Gregor Mendel discovered inheritance laws, the term ''incomplete dominance'' was... Read More

Genotypic ratio

Genotypic Ratio Definition To understand 'Genotypic ratio', let us first understand the terms: 'Genotype' and 'Phenotype'.... 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

Recessive trait

Definition noun (genetics) A genetic trait that results from the expression of the two recessive alleles. Supplement When... 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

Polygenic trait

Polygenic Trait Definition Polygenic trait refers to a trait that is controlled by multiple non-allelic genes. These genes... 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

Traits

Traits Definition "Trait" is a rather well-known word in the English language. What does trait mean? A trait is defined... Read More

Phenotypic ratio

Phenotypic Ratio Definition How would one define phenotypic ratio? The correlation between the amount of offspring that... Read More

Family traits

When one thinks of family, they often think of persons who are blood-related to each other as parents to their children and... Read More

Pseudodominance

Definition noun (genetics) The manifestation of a recessive trait, mimicking an inheritance of a dominant... Read More

Allele

Allele Definition What are alleles? An allele is a term coined to describe a specific copy of a gene. Genes, the DNA... Read More

Dominance

Reviewed by: Mary Anne Clark, Ph.D. The previous tutorial investigated Gregor Mendel and how he found trends in... Read More

Genotype

Genotype Definition Genotype is the genetic makeup of an individual cell or organism that determines or contributes to its... Read More

Recessive

Definition adjective (genetics) Of, or pertaining to, a gene (or allele) whose phenotypic expression is masked by a... Read More

Independent Assortment

Independent Assortment Definition Independent assortment refers to the genes or alleles that sort into the newly formed... 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

Sphingolipidosis

Definition noun, plural: sphingolipidoses A lysosomal disease due to an abnormal sphingolipid... 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

Dominant trait

Definition noun (genetics) An inherited trait that results from the expression of the dominant allele over the recessive... Read More

A Look Into Natural Selection and its Mechanisms

Charles Darwin is credited with outlining the fundamentals of evolution. He was a smart and eager pupil and protégé,... Read More

X linkage

Definition noun, plural: X linkages (genetics) A form of sex linkage involving particularly the X chromosome Supplement 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

Susceptible

Resistance, vulnerability, sensitivity, tolerance, and susceptibility are some highly important terminologies across the... Read More

Examples of Natural Selection

Reviewed by: Mary Anne Clark, Ph.D. Darwin's Finches Darwin's finches are an excellent example of the way in... Read More

Pleiotropy

Pleiotropy Definition When one single gene starts affecting multiple traits of living organisms, this phenomenon is known... Read More

Sphingolipid

Definition noun plural: sphingolipids sphin·go·lip·id A type of lipid with a sphingoid base (e.g. sphingosine and... Read More

Biology

Biology Definition Biology is the branch of science that primarily deals with the structure, function, growth, evolution,... Read More

Heterozygous

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

Filial generation

Definition noun, plural: filial generations (genetics) Any generation resulting from a genetically controlled mating... Read More

First filial generation

Definition noun (genetics) The filial generation comprised of offspring(s) resulting from a cross between two individuals... Read More

Polygene

Definition noun, plural: polygenes A group of genes that produces a specific phenotype or trait only when expressed... Read More

Sex-linked trait

Definition noun, plural: sex-linked traits A trait genetically determined by an allele located on the sex... Read More

Carrier

Definition noun, plural: carriers (general) A person or object that transports or conveys. (immunology) An asymptomatic... 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

Test cross

Definition noun Crossing an organism with dominant genotype to a recessive homozygote for a specific phenotype in order to... Read More