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4.Principles of Inheritance and Variation
medium
Mendel crossed a pure white-flowered recessive pea plant with a dominant pure red-flowered plant. The first generation of hybrids from the cross should show
A
$50\%$ white-flowered and $50\%$ red-flowered plants
B
All red-flowered plants
C
$75\%$ red-flowered and $25\%$ white-flowered plants
D
All white-flowered plants
Solution
(b) All red flowered plants; according to Mendel's law of dominance.
$\mathop {RR}\limits_{{\text{(Red}}\,{\text{dominance}})} \times \mathop {rr}\limits_{{\text{(Recessive white}})} \xrightarrow{{}}Rr\,({\text{Red}})$
Standard 12
Biology
