Name___________________________________________________________Date____________________Period_________

BiologyNotes:IncompleteandCodominance

Codominance

Defined:whenasinglegenehas_________than________dominantallele Ex:Cattle___________________

Redcow x Whitecow=

________________:Colorsblend

________________:Bothcolorsareequallyseen

Ex:Human_________________types

TypeAxTypeB=Type_______

BloodTypes

Humanbloodtypehas______alleles Dominant_____allele

Dominant_____allele Recessive_____allele TypeA&TypeBare__________________totypeO

TypeAandTypeBare____________________toeachother

1minute:Discusswithyourneighbor.MikeisheterozygousfortypeAbloodandLisaisheterozygousfortypeBblood.

A)ProbabilityofchildhavingtypeAblood?__________

B)Probabilityofchildhavingcodominantblood?__________

C)ProbabilityofchildbeingHeterozygous?__________

1minute:Discusswithyourneighbor.JasonishomozygousfortypeAbloodandMariawhoisheterozygousfortypeBblood.Theirchild,Rick,hascodominantblood.

a) Drawapedigreeforthisfamily. b) CompleteaPunnettsquareforJasonandMaria. c) WhatweretheoddsofRickhavingcodominantblood?

IncompleteDominance

Defined:____________________alleleiscompletelydominant Heterozygous=____________________appearance Morethan______different______________________canoccur Ex:Manyflower___________________

Incertainspeciesoffish,bluescales(BB)andyellow(YY)scalesareincompletelydominant.FillinthePunnettsquarewiththegenotypeofabluemaleandagreenfemale.

A) Whatistheprobabilityofobtainingheterozygousfish?________B) Yellowfish?________

Carnationsshowincompletedominancewherearedalleleandwhitealleleblendtomakepink.Apinkcoloredmalepollinateda pinkcoloredfemale.7seedswerecreatedandlatergrewintoplantswith3havingpinkflowers,2withwhiteflowers,and2withredflowers.

a) Createapedigreeforthese9flowers (maketheoffspringanygenderyou

wish).

b) CreateaPunnettsquarefortheparents.

c) Probabilityofgrowingpink?_________