Phenotypes and Quantitative Genetics Terminology Quiz

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Questions and Answers

What is the genetic makeup of an individual?

Genotype

What term describes the physical expression of a trait?

Phenotype

What type of inheritance pattern is characterized by the effects of multiple genes on phenotypes?

Polygenic inheritance

What term is used to describe traits that show continuous variation along a numeric or non-numeric scale?

<p>Quantitative traits</p> Signup and view all the answers

What is the term for the proportion of phenotypic variance that is due to genetic factors in a given population in a specific environment?

<p>Heritability</p> Signup and view all the answers

What is the term for the proportion of twin pairs where both members have the same phenotype?

<p>Concordance</p> Signup and view all the answers

What term describes the proportion of twin pairs where the members of the pair have different phenotypes?

<p>Discordance</p> Signup and view all the answers

What type of traits are those for which the underlying allele distribution is continuous, but the phenotypic expression of those alleles is discrete?

<p>Threshold traits</p> Signup and view all the answers

What is the term for phenotypes that can be recorded by counting whole numbers?

<p>Meristic traits</p> Signup and view all the answers

What is the term for genes that have a strong influence on the phenotypic variation of a trait?

<p>Major effect genes</p> Signup and view all the answers

What term describes the genes that affect the phenotypic variation to a lesser degree?

<p>Minor effect genes</p> Signup and view all the answers

What type of allele contributes equally to a phenotype?

<p>Additive allele</p> Signup and view all the answers

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