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| the transmission of traits from one generation to the next |
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| the scientific study of heredity, George Mendel |
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| when self fertalizaiton offspring identical to the parent |
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| a heritable feature that varies among individuals, ie color |
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| a varient of a character, ie white/ blue |
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| offspring of 2 different true breeding varieties |
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| the cross fertilization itself |
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| when F1 organisms self fertilize or fertilize themselves…. Offspring are F2 |
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| parent plant differs in only 1 character |
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| alternate versions of genes, for each character an organism has 2 alleles one from each parent, dominant vs recessive, law of segregation |
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| highlights the 2 possible combinations of gametes and the offspring that result from each |
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| an organism's physical traits |
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| an organism's genetic make up |
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| specific locations of genes along the chromosome- alleles reside in same loci |
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| the crossing of parental varieties differing in 2 characters- allele segregation |
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| Law of independent assortment |
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| the inheritance of 1 character has no effect on the inheritance of another |
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| a mating between an individual of dominant phenotype but unknown genotype and a homozygous recessive individual |
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| dual event- product of separate probabilities of independent events- "and" |
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| not necessarily specified by dominant alleles |
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| carriers of a recessive allele for a disorder but appear normal themselves |
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| a mating between two close blood relatives |
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| degeneration of the nervous system that usually doesn't begin till mid- life |
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| F1 hybrids have an appearance inbetween the phenotypes of the 2 parents |
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| high levels of cholesterol in blood |
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| examples of multiple alleles, 3 that have 4 phenotypes |
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| both alleles are expressed in heterozygous individuals |
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| the impact of a single gene on more than 1 character- like sickle cell disease |
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| additive effects of 2 or more genes on a single phenotic character |
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| chromosome theory of inheritance |
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| genes are located at specific positions of chromosomes and behavior of the cromosomes during meiosis and fertalization accounts for inheritance patterns |
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| located close together on a chromosome, don't follow law of independent assortment |
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| percentage of recombinant offspring among the total |
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| any gene located on a sex chromosome- unusual inheritance patterns |
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| red- green color blindness |
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| sex linked disorder characterized by a malfunction of light- sensitive cells in the eye |
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| sex linked recessive trait with a long, well documented history |
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