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 observations regarding
(i) Colour of stem in their F, progeny Green
(ii) Percentage of brown stemmed plants in F, progeny if F, plants
are self pollinated. 25%
(iii) Ratio of GG and Gg in the F, progeny. 3.1
(b) Based on the findings of this cross, what conclusion can be drawn?
answer
I) green (Gg green is dominant and brown in recessive )
ii) 25% ( one fourth of recessive trait is expressed in F2 progeny 1/4x100 =25%
iii) 1:2 ( GG is one Gg is 2 )
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Answer:
25 ✓ (one fourth of receive
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