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Byju's Answer

Standard XII

Biology

The Punnett Tool

Use the follo...

Question

Use the following information to answer the next question.
What will be the phenotype of progenies produced by crossing CCpp and ccPP?

All are colourless progenies.

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All are coloured progenies.

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Half of progenies are coloured and half are colourless progenies.

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Most of the progeny members are coloured and some are colouless.

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Solution

The correct option is B All are coloured progenies.
Colour of flower is due to the presence of pigment called anthocyanin which is synthesized by a series of biochemical reactions involving separate enzymes. The formation of each of these enzymes is determined by separate genes. Gene C and P in their dominant form produce functional enzymes 1 and 2 for the synthesis of coloured pigment. When either of the two genes is in recessive state (cc or pp), the functional enzyme C or P is not formed. When CCpp is crossed with ccPP, the phenotype of all the progenies will be coloured progenies and genotype of all the progenies will be CcPp.
Thus, the correct answer is 'All are coloured progenies.'

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Use the following information to answer the next question.What will be the phenotype of progenies produced by crossing CCpp and ccPP?

Use the following information to answer the next question.
What will be the phenotype of progenies produced by crossing CCpp and ccPP?