Genetics

Created by whsbio 

Upgrade to
remove ads

25 terms

Allele

alternative form of a gene

Chromosome theory of inheritance

genralization that genes are locatedon chromosomes and that the behavior of chromosomes during meiosis and fertilization accounts for inheritance patterns

codominance

inheritance pattern in which a heterozygote expresses the distinct traits of both alleles

cross-fertilization

processby which sperm from one flower's pollen fertilizes the eggs in a flower of a different plant

dihybrid cross

mating of two organisms that differ intwo characteristics

dominant

descriptive pf an allele in a heterozygour individual that appears to be the only one affecting a trait

gamete

egg or sperm sex cell that contains a single set of chromosomes, one from each homologous pair

gene locus

specific location of a gene on a chromosome

genetic linkage

tendency for allels of genes on the same chromosomes to be inherited together

genetics

study of heredity

genotype

genetic makeup of an organism; an organism's combination of alleles

heterozygous

having different alleles for a gene

homozygous

having identical alleles for a gene

hybrid

offsoring of two differnt true-breeding varieties

intermediate inheritance

inheritance in which heterozygotes have a phenotype intermediate between the phnotypes of the two homozygotes

meiosis

process by which the nucleus and duplicated chromosomes of a cell divide and are evenly distributed, forming two daughter nuclei

monohybrid cross

mating of two organisms that differ in only one character

phenotype

obserable traits of an organism

polygenic inheritance

combined effect of two or more genes on a single character

Punnett square

diagram showing the probabilities of the possible outcomes of a genetic cross

purebred

Produce offspring with same form of trait as parent.

recessive

descriptive of an allele in a heterozygous individual that dies not appear to affect a trait

sex-linked gene

gene located on a sex chromosome

testcross

mating of an individual of unknown genotype but dominant phenotype with a hmozygous recessive individual

trait

variation of a particular inherited character

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