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The passing of traits from parents to offspring.


a specific characteristic that an organism can pass to its offspring through its genes.


a specific study of heredity


The process in sexual reproduction in which an egg and a sperm cell join to form a new cell.


An offspring of many generations that has the same form of an trait.


A sequence of DNA that determines a trait and is passed from parent to offspring.


The different forms of a gene.

Dominate allele

An allele trait that always shows up in the oragnism when the allele is present.

Recessive allele

The allele that is hidden whenever the dominat allele is present.


An offspring of cross that has two different alleles for traits.


An number that describe how likey or an event will occur.

Punnet square

A chart that shows all the possible of alleles that can result from a genetic cross.


An organism physical appearence or physical traits.


An organism genetic make up or allele combinations.


having two identical alleles for a particular gene.


Having two different alleles for a particular gene.

Incomplete dominace

Situation in which one allele is not completely dominate over another allele.


A situation in which both alleles for genes are expressed equally.

Multiple alleles

Three or more possible alleles of a gene that determine a trait.

Polygenic in heritance

The inheritance of traits that are controlled by two or more genes.


The process that occurs in the formation of sex cells.

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