Thursday, November 26, 2009

Recessive and dominant?

hello i'm trying to figure out the kids in this sequence:



BbLl x BbLl



how many kids and what will the be if the B=Black hair, b=Blond hair,L=attached lobes,and l= unattached lobes



please help thanks alot...



Recessive and dominant?

you would have to do a dihybrid cross.



first you figure out all the possible gamete possiblities for each parent.



ex. BbLl: BL Bl bL bl



then cross it all, and figure it out.



BUT. if you are crossing 2 hybrids, then the outcome ratio will be



9:3:3:1



9/16 of the offspring were brown attached



3/16 were brown unattached



3/16 were blond attached



1/16 were blond unattached

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