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An F2 genotypic ratio of 1:4:6:4:1 inste...

An `F_2` genotypic ratio of 1:4:6:4:1 instead of 9:3:3:1 indicates :

A

`9:3:3:1`

B

`8:6:4:1`

C

`7:4:1:4`

D

`6:6:4:7`

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The correct Answer is:
A
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USHA PUBLICATION-HEREDITY & VARIATION -EXERCISE
  1. How many different types of gametes can be formed by F1 progeny , resu...

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

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

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

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

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  6. In which of the crosses , half of the offspring show dominant phenotyp...

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  7. Two allelic genes are located on the :

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  8. Red ( RR ) Antirrhinum is crossed with white ( rr ) one . The F1 hybri...

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  9. In a dihybrid cross , in F2 generation , the parental types are far gr...

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  10. Fill In The blank : The accepted law of Mendel is …………………..

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  11. Fill In The blank : The phenotypic ratio and genotypic ratio of monohy...

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  12. Fill In The blank : Crossing over takes place in ……………………

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  13. Fill In The blank : When two or more genes remain together closely for...

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  14. Fill In The blank : The phenomenon of Linkage was discovered by ………………...

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  15. Fill In The blank : One gene one enzyme hypothesis was given by ………………...

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  16. Fill In The blank : The functional unit of gene is ……………………

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  17. Fill In The blank : The smallest unit of gene is known as ……………………..

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  18. Fill In The blank : The genes which are constantly expressing themselv...

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  19. Fill In The blank : Chromosome theory of inheritance was given by …………...

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  20. Distinguish between: HEREDITY AND VARI

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