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Question
Lathyrus odoratus is an example of which of the following genes?
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Solution
The correct option is B Complementary genes
Complementary genes in Lathyrus odoratus: When two white flowered varieties of sweet pea, Lathyrus odoratus were crossed, F1 progeny had coloured flowers. When F2 progeny obtained from F1 was classified, plants with coloured flowers and those with white flowers were obtained in 9:7 ratio. This is again a modification of 9:3:3:1 ratio, where only one character. i.e., flower colour is involved and only two classes recognized (coloured and white flowers).
Complementary genes in Lathyrus odoratus: When two white flowered varieties of sweet pea, Lathyrus odoratus were crossed, F1 progeny had coloured flowers. When F2 progeny obtained from F1 was classified, plants with coloured flowers and those with white flowers were obtained in 9:7 ratio. This is again a modification of 9:3:3:1 ratio, where only one character. i.e., flower colour is involved and only two classes recognized (coloured and white flowers).
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