Multifactorial Inheritance and Population Genetics

Flashcards covering terms related to multifactorial inheritance and population genetics.

Multifactorial Traits

Traits influenced by multiple genes and environmental factors.

Quantitative Trait Loci (QTLs)

Genes that contribute to the variation in quantitative traits.

Heritability

The proportion of phenotypic variance in a population that is attributable to genetic variance.

Phenotype

The observable characteristics or traits of an organism.

Concordance

The occurrence of both twins expressing the same trait.

Discordance

The occurrence where one twin expresses a trait and the other does not.

Population Genetics

The study of genetic composition and changes within biological populations.

Hardy-Weinberg Law

A principle that describes the genetic equilibrium in a population.

Allele Frequencies

The relative frequency of an allele at a genetic locus in a population.

Continuous Traits

Traits that can be measured on a continuous scale.

Categorical Traits

Traits that are countable or fall into distinct categories.

Additive Alleles

Alleles that combine to contribute to a phenotype in a cumulative manner.

Threshold Traits

Traits expressed only when a certain threshold of genetic or environmental risk is exceeded.