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In guinea pigs , black short hair ( BBSS...

In guinea pigs , black short hair ( BBSS ) is dominant over white long hair ( bbss ) . During a dihybrid cross , the `F_2` -generation individuals with genotypes BBSS . BbSS . BBSs and BbSs are in the ratio of :

A

`9:3:3:1`

B

`4:2:1:2`

C

`1:2:1:2`

D

`1:2:2:4`

Text Solution

Verified by Experts

The correct Answer is:
D
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USHA PUBLICATION-HEREDITY & VARIATION -EXERCISE
  1. Which of the following is best suited for codominance ?

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  2. When a dihybrid cross is fit into a punnett square with 16 boxes , the...

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  3. In guinea pigs , black short hair ( BBSS ) is dominant over white long...

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  4. A pure tall and a pure dwarf plant were crossed to produced offsprings...

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  5. If AAbb xx aaBB , then phenotypic ratio of its progeny will be :

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  6. The experimental plant material used by Mendel was :

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  7. In pea plants , yellow seeds are dominant to green . If a heterozygous...

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  8. In a given plant , red colour ( R ) of fruits is dominant over white f...

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  9. Which of the following characters is not among the seven characters co...

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  10. When a tall plant with round seeds ( TTRR ) crossed with a dwarf plant...

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  11. When a cross is conducted between black feathered hen and a white feat...

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  12. A plant of F1 - generation has genotype ‘AABbCC’ . On selfing of this ...

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  13. In a monohybrid cross involving incomplete dominance , the phenotypic ...

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  14. How many different kinds of gametes will be produced by a plant having...

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

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

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

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

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

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

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