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If two pea plants having red (dominant) ...

If two pea plants having red (dominant) coloured flowers with unknown genotypes are crossed, `75%` of the flowers are red and 25% are white . The genotypic constitution of the parents having red coloured flowers will be

A

Both homozygous

B

One homozygous and other heterozygous

C

Both heterozygous

D

Both hemizygous

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The correct Answer is:
C
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ALLEN-GENETICS & MOLECULAR BASIS OF INHERITANCE AND MUTATION-EXERCISE-III (ANALYTICAL QUESTIONS
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  3. If two pea plants having red (dominant) coloured flowers with unknown ...

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  4. In the cross YYRR xx yyrr, the number of green coloured seeds in F(2) ...

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  5. Select the incorrect statement for Gregor Mendel-

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  7. Which of the following is not observed in a monohybrid cross-

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  8. Which statement is true-

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  9. If 3^(n) is the theoretically possible number of different genotypes (...

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  10. In the Punnet square given above, the genotype of the female parent an...

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  11. When aaBbcc is crossed with AaBBCc then the ratio of hybrid for all th...

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  12. In a plant, red fruit (R ) is dominant over yellow fruit (r ) and tall...

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  13. Out of three characters on chromosomes no. 4, two characters indicate ...

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  14. The Punnett square shown below represents the pattern of inheritance i...

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  15. In a plant gene 'A' is reponsible for tallness and its recessive allel...

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  16. In rabbit black skin (B) is dominant over brown skin (b) and short hai...

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  17. Which of the following points further strengthened Mendelism?

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  18. The offspring of AA bb xx aa BB is crossed with , aabb. The genotypic ...

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  19. Red nad tall dominant character hybrid plant when crossed with recessi...

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  20. A plant with genotype AABbCcDD is self - pollinated . Provided that th...

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