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14 Cards in this Set
- Front
- Back
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What is an ascus?
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A sac that encloses at tetrad or octad of sexual spores (ascospores)
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First Division Segregation
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different alleles go into different nuclei at the first meiotic division producting an MI division pattern of ascospores
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Second Division Segregation
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different alleles go into different nuclei at the second meiotic division producing an MII division patern of ascospores
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Homozygous (True Breeding)
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an individual having identical alleles of a gene
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Heterozygous
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an individual having different alleles of a gene
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monohybrid
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an individual heterozygous at one gene
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first filial F1 Generation
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the first generation resulting from a controlled cross between two known parents (p)
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Second Filial (F2) Generation
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the second generation resulting from a controlled cross between two known parents (p)
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Test Cross
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A cross between an individual of unknown genotype and an individual homozygous recessive for a particular gene
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Product Rule
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the probability that either of two mutually exclusive events occurs is equal to the sum of their individual probabilities
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Sex Chromosome
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a chromosome whose presence is associated with a particular sex
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Autosome
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a chromosome that is not a sex chromosome
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Sex linkage
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the location of a gene on a sex chromosome
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Hemizygous
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a gene present in only one copy in a diploid organism
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