SCIENCE
BOTANY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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9:7
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15:1
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1:2:1
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9:3:3:1
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Detailed explanation-1: -The complementary gene is a interaction of two dominant non inter-allelic gene in which each gene have its own effect but when come together to interact a new trait is developed and the Mendelian ratio 9:3:3:1 is changed to 9:7 due to complementation of both genes.
Detailed explanation-2: -So, the correct option is ‘Flower colour in Sweat Pea’.
Detailed explanation-3: -In a complementary gene interaction ratio is 9:7 and flower colour in sweat pea shows this type of gene interaction.
Detailed explanation-4: -Recessive epistasis The four phenotypic classes correspond to the genotypes: A B, A bb, aaB, and aabb. If either of the singly homozygous recessive genotypes (i.e. A bb or aaB ) has the same phenotype as the double homozygous recessive (aabb), then a 9:3:4 phenotypic ratio will be obtained.