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6 Cards in this Set
- Front
- Back
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Describe Mendel's experiment?
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made pure-breeding varietis of pea plants through self-pollination and selection
performed cross breeding between pure and varieties to make hybrids and found that color resembled only the dominant parent self fertilized hybrids for several generations and found that some plants produced the recessive and dominant traits |
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What are alleles?
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alternative genes that lead to different traits, inherit one allele from each parent
homozygous = 2 of the same hetero etc. |
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What are Mendel's laws of heredity?
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law of segregation
- hetero alleles are seperated from each other and remain distinct law of independent assortment - genes that are located on different chromosomes assort independently of one another |
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What is the pleiotropic effect?
bonus: ex? |
alleles often have more than one effect on the phenotype
marphan's syndrome (arachnodactyly) disease of connective tissue long arms and legs heart and vision problems |
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What is epistasis?
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one gene interferes with the expression of another gene
ex: something determines pigment color something else determines pigment deposit |
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What is co-dominance?
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no single allele is dominant and each allele has its own effect such as in blood types
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