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8
Science
7th Grade
02/05/2008

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Term
cross-pollination
Definition

when a plant can fertilze another plant. it gets from one plant to another by getting carried by the wind or by insects (Mendel; in his experiments used pea plants)

Term
self-pollination
Definition
when a plant fertalizes itself and has both male and female reproductive structures (Mendel in his experiments; with the purple & white flowers removed the anthers of one flower so it could not self-pollinate)
Term
dominat trait
Definition
the trait observed in the 1st generation when parents that have diffrent traits or genes are bred
Term
recessive trait
Definition
a trait that reappears in the 2nd generation after disapperaing in the 1st generation when parents with diffrent traits are bred
Term
ratios (and why they are important)
Definition

-mendel found a 3:1 ratio of dominat-to-recessive traits in the 2nd generation

-(def.) when a realtionship between 2 diffrent thigs is shown in a fraction

Term
heredity
Definition
the passing of genetiv traits from parent to offspring
Term
true-breeding
Definition
the offspring of 'true-breeding' plants all have the SAME traits as the parent
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