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In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates:

  • Option 1)

    The two genes are located on two different chromosomes.

  • Option 2)

    Chromosomes failed to separate during meiosis.

  • Option 3)

    The two genes are linked and present on the same chromosome.

  • Option 4)

    Both of the characters are controlled by more than one gene.

 

Answers (1)

best_answer

 

Test cross between flowers -

In a typical test cross, an organism showing a dominant phenotype is crossed with recessive parent instead of self-crossing.

- wherein

The result of typical test cross between a violet flower (w) is dominant over white flower (w) is dominant over white flower (w) is shown.

 

 @10859

Test cross between flowers -

In a typical test cross, an organism showing a dominant phenotype is crossed with recessive parent instead of self-crossing.

- wherein

The result of typical test cross between a violet flower (w) is dominant over white flower (w) is dominant over white flower (w) is shown.

 

 


Option 1)

The two genes are located on two different chromosomes.

This is incorrect option

Option 2)

Chromosomes failed to separate during meiosis.

This is incorrect option

Option 3)

The two genes are linked and present on the same chromosome.

This is correct option

Option 4)

Both of the characters are controlled by more than one gene.

This is incorrect option

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