82 results found

Search Results for: genotype

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

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

Codominance

Codominance Definition Codominance is a form of inheritance wherein the alleles of a gene pair in a heterozygote are fully... 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

Incomplete dominance

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

Parental generation

Definition noun (genetics) The first set of parents crossed in which their genotype is the basis for predicting the... 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

Mosaicism

Definition noun A condition wherein two or more cell populations with different genotypes exist in an organism, derived from... Read More

Genotypic ratio

Definition noun Pattern of offspring distribution according to genotype (i.e. the genetic constitution determining the... Read More

Dominant

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

Relative fitness

Definition noun A measure of biological fitness wherein the reproductive rate (of a genotype or a phenotype) is relative to... Read More

Disruptive Selection

Sometimes called Diversifying selection. This type of selection favors both the extremes at the expense of the average. An... Read More

Gene

A gene is the fundamental, physical, and functional unit of heredity. The genes make up the sequences of DNA (genotypes).... Read More

Absolute fitness

Definition noun A measure of biological fitness expressed as the total number of gene copies transmitted to the subsequent... Read More

Genetic variability

Definition noun (1) The tendency of individual genetic characteristics in a population to vary from one another. (2) The... Read More

Hardy-Weinberg equilibrium

Definition noun A principle stating that both allele and genotype frequencies in a randomly-mating population remain... Read More

Filial generation

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

Mosaic

Definition (general) (1) A pattern consisting of numerous small pieces (or elements) fitted together. (2) Anything that... Read More

Polimorphism analysis of k -casein gene on Nelore females and effect on weaning weight of the calves

FARIA, F.J.C., GUIMARAES, S.E.F., LIMA, R.M.G. et al.Abstract : Data from a Nelore herd were used after adjustment of the... Read More

Ecocline

Definition noun, plural: ecoclines A sequence of inter-ranking structure formed within a group between two distinct... Read More

Law of Unit Characters

Definition noun (genetics) A Mendelian law which states that every genetic character of an organism is controlled by unit... 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 principle

Definition noun A principle stating that both allele and genotype frequencies in a randomly-mating population remain... Read More

FAAH-OUT mutation for a life of no pain – No FAAH, no pain

A Scottish woman claims that she has not experienced pain over some supposedly painful conditions, like a severe joint... Read More

Allogamy

Definition noun (botany) Cross-fertilization, where fertilization occurs when an ovum of a flower is fertilized by the... Read More

Neomorphic mutation

Definition noun (genetics) A type of mutation wherein the change in gene leads to an atypically new function of the... Read More

Second filial generation

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

Law of Recessiveness

Definition noun A Mendelian law which holds that a recessive trait is expressed only when the paired allele the offspring... Read More

Hypomorphic mutation

Definition noun (genetics) A type of mutation wherein the change in gene leads to the partial loss of the normal... Read More

Law of Purity of Gametes

Definition noun (genetics) Gregor Mendel's law stating that the unit factors are brought together and paired during union or... Read More

Non-Mendelian inheritance

Definition noun (genetics) A type of biological inheritance wherein the patterns of phenotypes do not accord with those as... Read More

Mendelian inheritance

Definition noun (genetics) A type of biological inheritance that conforms to the set of principles of Gregor Mendel... Read More

Infectious heredity

Definition noun A non-Mendelian inheritance in which an infectious particle within the cell of the host may bring changes in... Read More

Trinucleotide repeat disorder

Definition noun, plural: trinucleotide repeat disorders Any of a set of genetic disorders caused by trinucleotide repeats... Read More

Antimorphic mutation

Definition noun (genetics) A type of mutation wherein the change in gene alters the activity of the gene such that it... Read More