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13 Cards in this Set

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Word
Definition
Heredity
the passing of genetic traits from parent to offspring
Dominant trait
the trait observed in the first generation when parents that have different traits are bred
Recessive trait
a trait that reapears in the second generation after disapering in the first generation when parents with different traits are bred
Gene
one set of instructions for inherited trait
Allele
one of the alternative forms of a gene that governs a charastic, such as hair color
Phenotype
an organism,s apperence or other detectable characteristic
Genotype
the entire genetic makup of an organism; also the combination of genes for one or more specific traits
Probability
the likeihood that a possible future event will occur in any given instance of the event
Homologous chromosomes
chromesomes that have the same sequence of genes and the same structure
Meiosis
a process in cell division during which the number of chromomes decreases to half the orininal number by two divisions of the nucleus, which results in the production of sex cells
Sex Chromosome
one of the pair of chromesomes that determine the sex of an individual
Pedigree
a diageam that shows the occurence of a genetic trait in several generations of a family