Tuesday, November 17, 2009

Biology homework plz help?

If white snapdragon flowers are incompletely dominant to red snapdragon flowers, then the result of fertilization between 2 pink flowers would be





a. 3/4 red and 1/4 white offspring


b. half white and half red offspring.


c. 1:2:1 phenotype and genotype ratio


d. 3/4 white and 1/4 red offspring


e. all pink flowers

Biology homework plz help?
just form a table where R represents the red dominant gene and r the other recessive one and then multiply them(think of the --- as blank spaces, i had to put them there for the letters to be in the right places):





------R ------r





R---RR-----rR





r ----rR------rr





Therefore 1 red, 2 pink and 1 white so the answer should be (c) 1:2:1 phenotype and genotype ratio


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