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21 Cards in this Set
- Front
- Back
allele
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one of a number of different forms of a gene
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codominance
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situation in which both alleles of a gene contribute to the phenotype of the organism
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crossing-over
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process in which homologous chromosones exchange portions of their chromatins during meiosis
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diploid
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term used to refer to a cell that contains both sets of homologous chromosomes
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fertilization
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process in sexual reproduction in which male and female reproductive cells join to form a new cell
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gamete
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specialized cell involved in sexual reproduction
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gene
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sequence of DNA that codes for a protein and thus determines the trait
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genotype
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specific makeup of an organasm
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haploid
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term used to refer to a cell that contains only a singel set of chromosomes and genes
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heterozygous
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used to refer to an organism that has two different alleles for a particular trait
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hybrid
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offpsring of crosses between parents w/ diff traits
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incomplete dominance
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situtation in which one allele is not compeletely dominant over the other
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independed assortment
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independent segragetion of genes during formation of gameetes
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meiosis
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process where # of chromosomes per cell is cut in half through speration of homologous chromosomes in diploid cell
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multiple alleles
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3 or more alleles of same gene
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phenotype
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physicla characteristics of an organism
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polygenic straits
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trait controlled by two or more genes
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segregation
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seperation of alleles during gameete formation
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tetrad
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structure containting four chromatids that form duringmeiosis
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trait
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specific characteristics that varies from one individual to another
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true-breeding
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term used to describe organisms that provide offspring to themselves if allowed to self pollinate
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