Biology hellllppppp please?

suppose that white carnations are INCOMPLETE dominant over red thorns are COMPLETELY dominant over smooth stemmed flowers.

A carnation with both color alleles will be pink.





Pollonate a red thornless carnation with the pollen from the anther of another that is white and pure for thorns.



Use the symbols R/r for color and T/t for thorns.



take it through the F1 phase only?

Biology hellllppppp please?
When dealing with incomplete dominance, I don't like to use upper and lower case because that is usually used for complete dominance, so it get's too confusing. The first thing you always do is make a key:



RR = red, WW = white, RW = pink

(if you wanted to use R/r, it would be RR = red, rr = white, Rr = pink)

T = thorns, t = no thorns.



Parental generation = RRtt (red thornless) x WWTT (white w/thorns)



Then, you have to set up a cross for two traits. (which I would draw here but it wouldn't look right, but you should have 16 boxes to fill in)



Next, perform the cross, which would be Rt Rt Rt Rt x WT WT WT WT. Since they are virtually all the same, you would get 100% RWTt, which would be pink w/thorns. Hope this helps, if you need more info, throw me an e-mail.
Reply:this is called a dihybrid cross with a dominent twist

wt x rt x WT x Wt xRT xRt get wwtt WWTT WwTt WWtt wwTT RRTT RrTT RRtt rrTT WWtt





W is white dominent w=incomplete T=dominent thorns

t=incomplete thorns

R is red D r-incompleteD

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