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Unformatted text preview: Occurs When Heterozygous Alleles Are Both Expressed. } Result is A Blending : } Example = Flowers : Co - Dominant X Co-Dominance : A Pair of Different Alleles Are “ Both ” Expressed. } NO Blending : BOTH Traits Show Up ! Example : Blood Types ! A = B = AB = O = Sex Chromosomes X Chromosomes That Determine an Individuals Sex. (Either % or & .) X In Humans = 23rd Pair only. X Two Chromosomes : Either “ X ” or “ y ” . X XX = _______. X Xy =________. X “ X ” & “ y ” are Different in Size & Shape. X “ X ” is a Large Chromosome; Lots of info. X “ y ” is a Small, Short, Stub of a Chromosome. X - Chromosome X All Individuals MUST carry an X Chromosome : d The Condition Oy Is Fatal !! d A Vital Component of Human “ Life ” is ( at least in part ) on the X Chromosome !! Notes :...
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- Spring '08
- Zygosity, Sex linkage, sex chromosomes, autosomal chromosomes