Warm up: Definitions. Dominant – trait expressed, Capital letter (ex “B”) Recessive – trait masked, lowercase letter (ex “b”) Heterozygous – 1 dominant allele, 1 recessive allele, called Hybrids or Carriers (ex “Bb”)
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(BB, Bb, or bb)
an organism, with an unknown
genotype, to a homozygous
recessive organism (tester).
The Principle of Unit Characters states that individuals pass information on as individual traits.