Genetics Vocabulary

Created by lemiekay 

Upgrade to
remove ads

Heredity

the passage of traits from parents to offspring

Allele

different forms of a gene, which produce variations in a genetically inherited trait.

Genetics

the study of how traits are inherited through the actions of alleles.

Hybrid

an offspring that was given different genetic information for a trait from each parent. Ex. Tt, Dd, Ff (also called Heterozygous)

Dominant

describes trait that covers over, or dominates, another form of that trait (and shows its specific trait even if only one parent passed the gene to its offspring).

Recessive

describes a trait that is covered over, or dominated, by another form of that trait and seems to disappear (except when both parents pass that gene to their offspring).

Punnett Square

a tool to predict the probability of certain traits in offspring that shows the different ways alleles can combine

Genotype

an organisms genetic makeup, expressed in uppercase and lowercase letters for dominant and recessive alleles. Ex. TT, tt, Tt, DD, Dd, dd

Phenotype

an outward physical appearance or behavior of an organism, expressed in words. Ex. Brown hair, green eyes, red flower, tall horse

Homozygous

describes an organism with two alleles that are the same for a trait - one from mom and the other from dad are the same. Ex. TT, tt.

Heterozygous

describes an organism with two different alleles for a trait - one from mom and a different one from dad. Ex. Tt.

Mutation

genes that are altered or copied incorrectly.

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set