Tuesday, November 17, 2009

In snapdragons, heterozygotes have pink flowers, whereas homozygotes have red or white flowers. When plants w?

In snapdragons, heterozygotes have pink flowers, whereas homozygotes have red or white flowers. When plants with pink flowers are crossed with plants with white flowers, what proportion of the offspring will have pink flowers?








a. 0





b. 1/2





c. 1/4





d. 1/8





e. 1/10

In snapdragons, heterozygotes have pink flowers, whereas homozygotes have red or white flowers. When plants w?
B. 1/2
Reply:b. 1/2





If you say that red snapdragons are RR, white are rr and pink are Rr.





You cross Rr with rr.





Rr x rr


Rr Rr rr rr





Therefore you have 2 pink snapdragons and 2 white ones.





= 1/2
Reply:b. 1/2
Reply:Let the heterozygote be RW, and the homozygote be WW.





Off you go.
Reply:1/2





When crossing snapdragons they are incompletely dominant which means they share dominance between the two color traits. Rr X rr will make Rr, rr, Rr, rr
Reply:What?

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