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Definition
| if an organism has a certain characteristic that is always passed on to its offspring, we say this organism bred true with respect to that characteristic |
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Definition
| one of a pair of genes that occupies the same position on homologous chromosomes |
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Definition
| a two-letter set that represents the alleles an organism has for a certain trait |
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Definition
| the observable expression of an organism's genes |
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Definition
| a genotype in which both alleles are identical |
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Definition
| a genotype with two different alleles |
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Definition
| an allele that will determine the phenotype if just one is present in the genotype |
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Definition
| an allele that will not determine the phenotype unless the genotype is homozygous in that allele |
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Term
| Mendel's principles of genetics |
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Definition
1) The traits of an organism are determined by its genes
2) Each organism has 2 alleles that make up the genotype for a given trait
3) In sexual reproduction, each parent gives only one of its alleles to its offspring
4) In each genotype, there is a dominat allele |
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Definition
| a diagram that follows a particular phenotype through several generations |
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Definition
| a cross between two individuals, concentrating on only 1 definable trait |
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Term
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Definition
| a cross between 2 individuals, concentrating on 2 definable traits |
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Definition
| chromosomes that do not determine the sex of an individual |
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Definition
| Chromosomes that determine the sex of an individual |
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Definition
| a protein that, when introduced in the blood, triggers the production of an antibody |
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Definition
| inheritance of a genetic trait not on a sex chromosome |
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Definition
| a person who is heterozygous in a recessive genetic disorder |
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Term
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Definition
| inheritance of a genetic trait located on the sex chromosomes |
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Term
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Definition
| a radical chemical change in one or more alleles |
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Term
| Change in Chromosome structure |
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Definition
| a situation in which a chromosome loses or gains genes during meiosis |
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Term
| Change in Chromosome number |
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Definition
| a situation in which abnormal cellular events in meiosis lead to either none or more than 1 chromosome in the gamete |
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