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19 Cards in this Set
- Front
- Back
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multiple genes
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pattern of inheritance(continuous variation) produced by many genes affecting a particular trait (for example, skin color in humans)
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incomplete dominance
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pattern of inheritance in which neither allele is dominant and three totally different phenotypes can occur
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sex chromosome
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X and Y chromosomes that are different between the sexes and that are involved in sex determination
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allele
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either of two alternative forms of a gene for a particular trait such as flower color
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recessive
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the form of a trait that is hidden in the F1 generation
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heterozygous
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organism in which each cell contains two different alleles for a certain trait
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multiple alleles
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set of three or more different lleles that control a trait
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sex-linked trait
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an inherited trait, such as eye color in fruit-flies, determined by a gene on the sex chromosome
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genotype
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combination of alleles for a certain trait
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autosome
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chromosomes other than sex chromosomes
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genetics
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science of inheritance of traits
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modifier gene
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genes interacting with each other to control particular traits, such as eye color
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phenotype
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physical appearance of an organism as determined by a particular genotype
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codominance
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occurs when one allele is not dominant; both alleles are expressed equally
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heredity
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transmission of traits from parents to offspring
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continuous variation
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gradations in traits(for example, variation of ears of corn as a result of the presence of many different phenotypes
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gene
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factor containing information for every trait
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homozygous
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organism in which each cellcontains two of the same alleles for a particular trait
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dominant
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form of a trait that dominates another trait
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