Genetics List 1-Chapter 9

20 terms by bridgesbiology 

Create a new folder

Advertisement Upgrade to remove ads

allele

alternative forms of a gene for each variation of a trait of an organism

dominant

observed trait of an organism that masks the recessive form of a trait

genetics

the branch of biology that studies heredity and variation in organisms

recessive

An allele that is masked when a dominant allele is present

trait

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

genotype

genetic makeup of an organism

phenotype

what an organism looks like as a consequence of its genotype

dihybrid cross

A cross between two individuals, concentrating on two definable traits

monohybrid cross

A cross between two individuals, concentrating on a single trait

heterozygous

term used to refer to an organism that has two of the different alleles for the same trait

homozygous

term used to refer to an organism that has two same alleles for the same trait

Punnett square

diagram showing the gene combinations that might result from a genetic cross

F1 generation

the first offspring from a cross of two varieties in the parental (P) generation

F2 generation

offspring resulting from interbreeding of the hybrid F1 generation

P1 generation

parental generation, the first two individuals that make in a genetic cross

gene

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

heredity

the biological process whereby genetic factors are transmitted from one generation to the next

Mendel

Austrian monk whose work with peas contributed to our understanding of genetics

probability

the likelihood that a specific event will occur; expressed in mathematical terms

testcross

the crossing of an individual of unknown genotype with a homozygous recessive individual to determine the unknown genotype

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