A green stemmed rose plant denoted by GG and a brown stemmed rose plant denoted by gg are allowed to undergo a cross with each other.

(a) List your observation regarding


(i) Colour of stem in their F1 progeny


(ii) Percentage of brown stemmed plants in F2 progeny if F1 plants are self pollinated.


(iii) Ratio of GG and Gg in the F2 progeny.


(b) Based on the findings of this cross, what conclusion can be drawn ?


(i) Green

(ii) 25%


(iii) 1:2:1




(B) The conclusion is that both the gametes are showing it’s expression in the F2 generation because we are getting 1:2:1 ratio of the monohybrid cross. We can see that both the laws of Mendel has been used in this case which is low of dominance and law of segregation.


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