explain Mendel's dihybrid ratio with the help of any one cross
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pea plant eg-
In dihybrid cross ,we take two characters so here,let's take height of the plant and its seed colour.
T represents tall plant, t represents dwarf plant , Y represents yellow seed and
y represents green colour.
in f1 generation TTYY (tall and yellow) is crossed with ttyy(dwarf and green)
TTYY×ttyy
↓ ↓
TY × ty →TtYy ( f1)
now for f2 generation TtYy is self crossed
and the phenotypic ratio obtained is 9:3:3:1
In dihybrid cross ,we take two characters so here,let's take height of the plant and its seed colour.
T represents tall plant, t represents dwarf plant , Y represents yellow seed and
y represents green colour.
in f1 generation TTYY (tall and yellow) is crossed with ttyy(dwarf and green)
TTYY×ttyy
↓ ↓
TY × ty →TtYy ( f1)
now for f2 generation TtYy is self crossed
and the phenotypic ratio obtained is 9:3:3:1
madhurpatel:
very good answer
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