Question

hey!!!!..

one plant with a dominant tall height bears purple flowers with another plant being a recessive dwarf and white flowers. answer the following questions based on the above statement :

#what do the plants of the F1 generation look like ?
#what type of cross is it ?
#what is the phenotypic ratio in F2 generation and name the type of plants obtained according to the phenotypic ratio ?

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Answer 1

Here tallness and purple colour of flower are the dominant  characters , while dwarf and white colour flowers are recessive .

GENE OF TALLNESS:  TT

GENE FOR DWARFISM:  tt

GENE FOR PURPLE FLOWER:  PP

GENE FOR WHITE FLOWER:  pp

ANS 1:-  TALL PURPLE (TtPp)

ANS 2:- DIHYBRID CROSS

ANS 3:- 9:3:3:1

9 TALL PURPLE : 3 TALL WHITE : 3 DWARF PURPLE : 1 DWARF WHITE

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