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genes
Term | Definition |
---|---|
allele | the different form of a trait that a gene may have |
dominate | describes a trait that covers over or dominates another form of that trait |
genetic | the study of how traits are inherited through the actions of alleles |
gnetic engineering | biological and chemical methods to change the arrangement of a genes DNA to improve crop production produce large volumes of medicine and change how cells perform their normal functions |
genotype | an organisms genetic makeup |
heredity | the passing of traits from parents to offspring |
heterozygous | describes an organism with two different alleles for a trait |
homozygous | desscribes an organism with two alleles that same trait |
incomplete dominance | production of a phenotype that is intermediate between the two homozygous parents |
phenotype | the way an arganism looks and behaves as a result of its genotype |
polygenic inheritance | occurs when a group of gene pairs acts together and produces a specific trait,such as human eye color,skin color,or height |
punnett square | a tool to predict the probalilty of certain traits in offspring that shows the different ways alleles can combine |
recessive | describes a trait that is covered over or dominated by another form of trait and seems to disappear |
sex linked gene | an allele inherited on a sex chromosome and that can cause human genetic disorders such as color blindness and hemophilia |