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CH 10 - Genetics

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119042062traitvariation of a particular inherited character
119042063geneticsstudy of heredity
119042064cross-fertilizationprocess by which sperm from one flower's pollen fertilizes the eggs in a flower of a different plant
119043093hybridoffspring of two different true-breeding varieties
119043094monohybrid crossmating of two organisms that differ in only one character
119043095allelealternative form of a gene
119043096homozygoushaving identical alleles for a gene
119043097heterozygoushaving different alleles for a gene
119043098dominantdescriptive of an allele in a heterozygous individual that appears to be the only one affecting a trait
119043099recessivedescriptive of an allele in a heterozygous individual that does not appear to affect a trait
119043100Punnett squarediagram showing the probabilities of the possible outcomes of a genetic cross
119043101phenotypeobservable traits of an organism
119043102genotypegenetic makeup or an organism; an organism's combination of alleles
119043103testcrossmating of an individual of unknown genotype but dominant phenotype with a homozygous recessive individual
119043104dihybrid crossmating of two organisms that differ in two characters
119419529intermediate inheritance (incomplete dominance)-inheritance in which heterozygotes have a phenotype intermediate between the phenotypes of the two homozygotes -dominant gene isn't completely dominant over the recessive gene (Red + White = pink)
119419530codominanceinheritance pattern in which a heterozygote expresses the distinct traits of both alleles (blood types LaLa, LaLo)
119419531polygenic inheritancecombined effect of two or more genes on a single character
119419532chromosome theory of inheritancegeneralization that genes are located on chromosomes and that the behavior of chromosomes during meiosis and fertiliaztion accounts for inheritance patterns
119419533gene locusspecific location of a gene on a chromosome
119419534genetic linkagetendency for alleles of genes on the same chromosome to be inherited together
119419535sex-linked genegene located on a sex chromosome
125479234true-breedingoffspring identical in appearance to itself generation after generation
125479235Mendel's principle of segregationThe two alleles for a character segregate (separate) during the formation of gametes (sex cells), so that each gamete carries only one allele for each character
125479236particulate hypothesis of inheritanceheritable factors retain their identity generation after generation

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