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8U3C1

Heredity & Genetics

QuestionAnswer
Trait specific characteristic of an individual
heredity the passing of traits from parent to offspring
gene segments of DNA strands that code for a specific trait
Alleles different versions of a gene
dominant allele An allele whose trait always shows up in the organism when the allele is present.
recessive allele An allele that is masked when a dominant allele is present
genotype genetic makeup of an organism
Phenotype physical characteristics of an organism
Homozygous an organism that has two identical alleles for a trait
Heterozygous an organism that has two different alleles for a trait
Gregor Mendel father of modern genetics
generation a set of members that are born at the same time
Punnett square a tool used to predict the possible genotypes in offspring of a cross
Probability likelihood that a particular event will occur
incomplete dominance cases in which one allele is not completely dominant over another
Co dominant trait
capital letter dominant alleles are represented by a
lower case letter recessive alleles are represented by a
Reginald Punnett developed the Punnett square
Created by: Ms. Greenup
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