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In Mirabilis , a hybrid for red ( RR ) a...

In Mirabilis , a hybrid for red ( RR ) and white ( rr ) flower produces pink ( Rr ) flower . A plant with pink flower crossed with white flower , the expected phenotypic ratio is :

A

`red : pink : white ( 1 : 2 : 1 )`

B

`Pink : white ( 1 : 1 )`

C

`red : pink ( 1 : 1 )`

D

`red : white ( 3 : 1 )`

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The correct Answer is:
B
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USHA PUBLICATION-HEREDITY & VARIATION -EXERCISE
  1. How many different kinds of gametes will be produced by a plant having...

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  2. When tall and dwarf plants are crossed , from which cross 1 : 1 ratio ...

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  3. In Mirabilis , a hybrid for red ( RR ) and white ( rr ) flower produce...

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  4. Ratio of progeny , when a red coloured heterozygote is crossed with a ...

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  5. Two pea plants were subjected for cross pollination . Of the 183 plant...

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  6. The total number of progeny obtained from a dihybrid cross is 1280 in ...

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  7. What type of gametes will form by genotype RrYy ?

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  8. Pure tall plants are crossed with pure dwarf plants . In the F1 - gene...

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  9. The term linkage was coined by

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  10. Crossing over is advantageous because it brings about

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  11. Law of Mendel , which is not completely applicable is ?

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  12. If a plant having yellow and round seeds was crossed with another plan...

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  13. The 1 : 2 : 1 ratio with the pink flower in the F2 generation indicate...

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  14. Probability of genotype TTrr in F2 - generation of a dihybrid cross is...

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  15. Which one of the following was rediscoverer of Mendel's work :

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  16. How many different types of gametes can be formed by F1 progeny , resu...

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  17. What will be the gametic chromosome number of a cell , if somatic cell...

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  18. An F2 genotypic ratio of 1:4:6:4:1 instead of 9:3:3:1 indicates :

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  19. Which law Mendel would not have proposed , if the phenomenon of linkag...

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  20. The number of genotypes produced in F2 generation in Mendel's monohybr...

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