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Chapter 10
chapter 10 vocab
15
Biology
9th Grade
12/15/2008

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Term
Trait
Definition
varriation of something that you have inherited
Term
genetics
Definition
study of heredity
Term
cross-fertilization
Definition
procces when the sperm from a flower's pollen fertilizes an egg of a flower from another plant
Term
hybird
Definition
offspring of two different truebreeding varieties
Term
monohybird cross
Definition
mating of two organisms that differ in only one character
Term
allele
Definition
alternative form of a gene
Term
homozygous
Definition
having identical alleles for a gene
Term
heterozygous
Definition
having different alleles for a gene
Term
dominant
Definition
an allele in a heterozygous individual that appears to be the only one affecting a trait
Term
recessive
Definition
descriptive of an allele in a heterozygous individual that does not appear to affect a trait
Term
Punnet square
Definition
diagram showing the probabilities of the possible outcomes of a genetic cross
Term
phenotype
Definition
observable traits of an organism
Term
genotype
Definition
genetic makeup of an organism
Term
testcross
Definition
mating of an invidual of unkown genotype but dominant phenotype with a homozygous recessive individual
Term
dihybrid cross
Definition
mating of two organisms that differ in two characters
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