In Summer Squash, the fruit colour can be white, yellow and green. The appearance of white colour is due to a dominant gene W. The latter is
In Summer Squash, the fruit colour can be white, yellow and green. The appearance of white colour is due to a dominant gene W. The latter is
The correct option is D Epistatic gene
In
summer squash, three types of fruit colours appear, white, yellow and green.
White colour is controlled by dominant gene W and yellow colour by dominant
gene G. White is dominant over both yellow and green. The
green fruits are produced in recessive condition (wwgg). A cross between plants
having white and yellow fruits produced F1 with white fruits. Inter-mating
of F1 plants produced plants with white, yellow and green coloured fruits
in F2 in 12 : 3 : 1 ratio. Here W is dominant to w and epistatic
to alleles G and g. Hence it will mask the expression of G/g alleles. Hence in F2, plants with
W-G-(9/16) and Wwgg (3/16) genotypes will produce white fruits; plants with
wwG-(3/16) will produce yellow fruits and those with wwgg (1/16) genotype will
produce green fruits.
So,
the correct option is ‘epistatic gene’
In summer squash, three types of fruit colours appear, white, yellow and green. White colour is controlled by dominant gene W and yellow colour by dominant gene G. White is dominant over both yellow and green. The green fruits are produced in recessive condition (wwgg). A cross between plants having white and yellow fruits produced F1 with white fruits. Inter-mating of F1 plants produced plants with white, yellow and green coloured fruits in F2 in 12 : 3 : 1 ratio. Here W is dominant to w and epistatic to alleles G and g. Hence it will mask the expression of G/g alleles. Hence in F2, plants with W-G-(9/16) and Wwgg (3/16) genotypes will produce white fruits; plants with wwG-(3/16) will produce yellow fruits and those with wwgg (1/16) genotype will produce green fruits.
So, the correct option is ‘epistatic gene’
