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17 Cards in this Set

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Reason for Mendelian's success
-worked with a favorable organism (pea plants)
-used very large amounts of plants
-used pure strains of plants
-able to polinate plants
-used math and probibility
-studied one trait at a time
-chose traits carefully
-lucky
gene
a sequence of DNA that controls the expression of a trait
allele
a different form of a gene for a trait
homozygous
both alleles are the same
heterozygous
both alleles are different
pure
both alleles are the same
hybrid
both alleles are different
chromosomes
rod-shaped structure in nucleous carrying genes
dominant
gene that controls a characteristic
recessive
lower case, must be both,
genotype
enetic make up of an organism
phenotype
the way an organism appears
law of dominance
some alleles are always expressed, some are not
law of segregation
if an orgainism has 2 different alleles each allel is inhereted seperatly
law of independent assortment
in a dihybrid cross the alleles for each trait are inhereted seperatly
incomplete dominance
the hybrid condition gives you a third phenotype
the 4:00 flower
co-dominance
both traits are expresssed
hourse hairs