Search Results for: genotype
Darwinian fitness
Darwinian Fitness Definition Darwinian fitness refers to the measure of an individual organism's or genotype's reproductive... Read More
Homozygous
Homozygous Definition Diploid organisms that have a genotype of identical alleles for a trait or phenotype at a specific... Read More
Genotypic ratio
Genotypic Ratio Definition To understand 'Genotypic ratio', let us first understand the terms: 'Genotype' and 'Phenotype'.... 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
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
Test cross
Definition noun Crossing an organism with dominant genotype to a recessive homozygote for a specific phenotype in order to... 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
Complete dominance
Complete Dominance Definition Genetics is the study of how traits are inherited by organisms and in what ways these... Read More
Phenotypic ratio
Phenotypic Ratio Definition How would one define phenotypic ratio? The correlation between the amount of offspring that... 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
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
An evolutionary process known as disruptive selection (or disruptive natural selection) causes a population to become... Read More
Neutral mutation
Neutral Mutation Definition What is a neutral mutation? Neutral mutations are the alterations in the DNA that are... Read More
Genetic variability
Genetic Variability Definition Genetic variability refers to the tendency of individual genetic characteristics in a... 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
Sexual selection
What is Sexual Selection? The definition of sexual selection is very interesting in biological terms. The sexual selection... 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
Hardy-Weinberg equilibrium
Definition noun A principle stating that both allele and genotype frequencies in a randomly-mating population remain... Read More
Y chromosome
Y chromosome Definition The Y chromosome constitutes one member of the pair of sex chromosomes within an organism, a common... 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
Filial generation
Definition noun, plural: filial generations (genetics) Any generation resulting from a genetically controlled mating... Read More
Gibberellins and Gibberellic Acid
The family of gibberellins have a similar effect to that of auxins; they promote cell division and elongation. The major... 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
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
Trinucleotide repeat disorder
Definition noun, plural: trinucleotide repeat disorders Any of a set of genetic disorders caused by trinucleotide repeats... Read More
The Gene Pool and Population Genetics
Reviewed by: Mary Anne Clark, Ph.D. The previous tutorial is about adaptive radiation. Adaptive radiation is... Read More
Genetic Engineering Advantages & Disadvantages
Through genetic engineering, scientists are able to move desirable genes from one plant or animal to another or... Read More