bio quiz

Polygenic traits

Traits controlled by two or more genes

Sex linked traits

Traits controlled by genes located on sex chromosomes

codominance

A condition in which both alleles for a gene or fully expressed

Incomplete dominance

A pattern of inheritance in which two alleles, inherited from the parents, are neither dominant nor recessive. The resulting offspring have a phenotype that is a blending of the parental traits

Recessive trait

A trait that is a parent, only when two recessive alleles for the same characteristics are inherited

Dominant trait

The trait that covers up the other form of the trait

Phenotype

An organism’s physical appearance or visible traits

Genotype

An organism’s genetic makeup or allele combinations

Heterozygous

An organism that has two different alleles for a Trait

Homozygous

An organism that has two identical alleles for a gene

Allele

Different forms of a gene

gene

A segment of DNA on a chromosome that codes for a specific trait

Genetics

The specific study of heredity

Hybrid

Offspring of Crosses between parents with different traits

True breeding

Term used to describe organisms that produce offspring identical to themselves if allowed to self pollinate

Probability

A number that describes how likely it is, that an event will occur

Multiple alleles

Three or more forms of a gene that code for a single trait