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33 Cards in this Set
- Front
- Back
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Allel
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an alternative form of a gene
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Anther
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male part of a plant which holds pollen
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codominance
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an inheritance relationship in which neither of two allels of the same gene totally masks the other
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complete dominance
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an inhertitance relationship in which one allel is completely dominant over teh other; both Bb and BB have the same phenotype
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cross-pollination
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a reproductive process in which pollen from one plant is transferred to the stigma of another plant
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dihybrid cross
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a cross between individuals that involves the pairing of contrasting traits
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dominant
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refering to an allele that masks the presence of another allele
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F1 generation
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the offspring of of cross pollinated P1 generation plants
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F2 generation
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the offspring of self pollinated F1 generation plants
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genetics
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the feild of biology devoted to understanding how traits are are passed from parents to offspring
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genotype
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the genetic makeup of an organism
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genotypic ratio
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the probably ratio of genotypes produced by a cross
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heredity
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the transmission of traits from parents to offspring
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heterozygous
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the referring to a gene pair in which the two alleles do not code for the same triat (Bb)
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homozygous
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referring to a gene pair in which the two aleles code for the same trait (BB, bb)
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incomplete dominance
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an inheritance rellationship that occurs when both alleles influence the phenotype
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law of independant assortment
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law stating that pairs of genes seperate independantly of one another in meiosis
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law of segregation
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law stating that pairs of genes seperate in meiosis and each gamete receives one gene of a pair
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molecular genetics
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the study of the structure and function of chromosomes and genes
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monohybrid cross
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a cross between individuals that invovles one pair of contrasting traits
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P1
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a strain obtained through self pollination
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phenoytpe
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the appearance of an organism based on its genotype
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phenotype frequency
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a ratio stating the number of times a specific phenotype occurs in a population in a single generation
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pollination
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the transfer of pollen from an anther to a stigma of a flower of the same species
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probability
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the number of times an event is expected to happen divided by the number of opportunities for an event to happen
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Punnett Square
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a model used to establish the probabilities of the results of a genetic cross
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recessive
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referring to an allele that is masked by another allele
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self-pollination
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pollination involving the same flower, creating two genetically identical plants
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Stigma
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part of the style that recives the pollen
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strain
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talks about plants that are pure for a spicific trait
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pure
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plants that are pure always produce offspring with that trait
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testcross
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the crossing of an individual of unknown genotype with a homzygous recessive individual to determine the unknown genotype
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trait
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in genetics, a category within each alternate characteristics, such as height and eyecolor, can be observed
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