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In dihybrid crosses the "F"(1) heterozyg...

In dihybrid crosses the `"F"_(1)` heterozygous plants are self fertilized to produce an `"F"_(2)` generation and if offsprings are computed in Punnett square the phenotypic `"F"_(2)` ratio as per Mendel's independent assortment will yields:

A

`9 : 7`

B

`9 : 3 : 3 : 1`

C

`9 : 6 : 1`

D

`12 : 3 : 1`

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The correct Answer is:
B
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GRB PUBLICATION-MENDELIAN INHERITANCE-Multiple Choice Questions
  1. Law of Mendel which is not completely applicable is:

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  2. Mendel's law of independent assortment is applicable for:

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  3. In dihybrid crosses the "F"(1) heterozygous plants are self fertilized...

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  4. The ratio of 9:3:3:1 is due to

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  5. Which type of gametes are produced by RrYy?

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  6. A cross involving "F"(1) hybrid and a double recessive parent is:

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  7. The dihybrid test cross ratio is:

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  8. In a cross between individuals with genotypes TtRr, if the resulting n...

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

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  10. How many different types of gametes can be formed by "F"(1) progeny re...

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  11. A trihybrid cross is made between two yeasts, both with genotypes AsBb...

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  12. A plant of "F"(1) generation with genotype AABbBB. On selfing of this ...

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  13. How many difference types of gametes can be produced by an organism o...

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  14. How many types of gentically different gametes can be produced by an a...

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  15. How many types of genetically different gametes will be produced by he...

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  16. How many genetically different gametes can be made by an individual of...

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  17. If an individual of genotype AaBbCcDd is test crossedk, how many diffe...

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  18. If individuals of genotype AaBbCc are intercrossed, how many different...

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  19. If individuals of genotype AaBbCc are intercrossed, how many different...

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  20. How many phenotypes will be obtained from a test cross of AaBbCc?

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