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Unit 6 Vocabulary

TermDefinition
Pedigree a diagram that shows the occurrence of a genetic trait in several generations of a family
Heredity the passing of genetic traits from parent to offspring
Traits a genetically determined characteristic
Dominant Trait the trait observed in the first generation when parents that have different traits are bred
Recessive Trait a trait that is apparent only when two recessive alleles for the same characteristic are inherited
Alleles one of the alternative forms of a gene that governs a characteristic, such as hair color
phenotype an organism's appearance or other detectable characteristic
Genotype the entire genetic makeup of an organism; also the combination of genes for one or more specific traits
incomplete dominance situation where an organism inherits a blended phenotype instead of just the dominant trait, when both the dominant and recessive alleles are present in the genotype.
Punnett Square a diagram that is used to predict an outcome of a particular cross or breeding experiment.
Gene one set of instructions for an inherited trait
Mutations a change in the nucleotide-based sequence of a gene or DNA molecule
Probability the likelihood that a possible future even will occur in any given instance of the event
Homozygous When an individual has two of the same allele, whether dominant or recessive, they are homozygous. Example - RR, rr
Heterzygous having one each of two different alleles. Example- Rr
Gregor Mendel The father of genetics
Offspring the young born of living organisms, produced either by a single organism or, in the case of sexual reproduction, two organisms
Parent A person or organism who has, through reproduction, created an offspring
Created by: madisonnegley
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