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Heredity
| Term | Definition |
|---|---|
| heredity | the passing of genetic material from parents to offspring |
| gene | segments of DNA found in chromosomes that give instructions for producing a certain characteristic - inherited from parents |
| allele | different versions of a gene-dominant and recessive - identified by uppercase letter and lowercase letter |
| homozygous | an organism with 2 of the same types alleles - dominant or recessive |
| heterozygous | an organism with 1 dominant and 1 recessive allele |
| genotype | the combination of alleles inherited from both parents |
| phenotype | observable traits |
| dominant | contributes to the phenotype if one or 2 copies are present in the genotype |
| recessive | contributes to the phenotype only when 2 copies of it are present |
| incomplete dominance | each allele in a heterozygous individual influences the phenotype |
| codominance | both of the alleles in a heterozygous individual contribute to the phenotype |
| Punnett Squares | a graphic used to predict the possible genotypes of offspring in a given cross - shows all the possible allele combinations in the offspring |
| pedigree | a tool used to study patterns of inheritance - it traces the occurrence of a trait through generations of a family |
| probability | the mathematical chance of a specific outcome in relation to the total number of possible outcomes |
| ratio | an expression that compares two quantities |
Created by:
KellyKirvin
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