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10.1 and 10.2 Vocab Words
10. and 10.2 vocab words and definitions
15
Biology
9th Grade
12/16/2008

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Term
Trait
Definition
variation of a particular inherited character
Term
Genetics
Definition
study of heredity
Term
cross-fertilization
Definition
process by which sperm from one flower's pollen fertilizes the eggs in a flower of a different plant
Term
Hybrid
Definition
offspring of two different true-breeding varieties
Term
Monohybrid 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
descriptive of 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
Punnett 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; an organism's combination of alleles
Term
Testcross
Definition
mating of an individual of unknown 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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