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Biology
Vocabulary
20
Science
8th Grade
03/20/2013

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Term
Gregor Mendel
Definition
Father of Genetics
Term
Genetics
Definition
Traits passed on from the parents to the child
Term
Gene
Definition
Physical and functional unit of heredity on a specific segment of DNA
Term
Allele
Definition
An alternative form of a gene you get one from dad and one from mom and they can be either dominant or ressecive
Term
Heredity
Definition
Passing and inheritance of traits from the parents to the child
Term
Trait
Definition
A unique feature or quality in a person passed down through generations
Term
Heterozygous
Definition
An organism that has two different alleles for a particular gene
Term
Homozygous
Definition
An organism that has two identical alleles of a particular gene
Term
Recessive
Definition
Describing a genetic trait that is expressed in a homozygous
Term
Punnett Square
Definition
Aid in predicting the probability that certain traits will be inherited
Term
Parent Generation
Definition
The first generation of parents
Term
F1 generation
Definition
The first generation of offspring
Term
Dominant
Definition
relating to or denoting heritable characteristics that are controlled by genes that are expressed in offspring even when inherited from only one parent
Term
Co-Dominance 
Definition
 the complete phenomenon whereby, in an individual containing two allelic forms of a gene, one is expressed to the exclusion of the other
Term
Probability
Definition
the extent to which an event is likely to occur, measured by the ratio of the favorable cases to the whole number of cases possible
Term
Ratio
Definition
the quantitative relation between two amounts showing the number of times one value contains or is contained within the other
Term
Phenotype
Definition
An organism's physical expressed traits
Term
Genotype
Definition
An organism's genetic expressed traits
Term
Mutation
Definition
Errors in the DNA process of dividing
Term
Homolog
Definition
Having the same relation, relative position, or structure, in particular
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