Home
Class 12
BIOLOGY
An individual homozgous for genes cd is ...

An individual homozgous for genes cd is crossed with wild type and `F_(1)` is crossed back with the double recessive. The appearance of the offspring is a follows:
`{:(++" "-" "903),(cd" "-" "897),(+d" "-" "98),(c+" "-" "102):}`
The distance between genes c and d is

A

20 map units

B

9.8 map units

C

10.2 map units

D

10 map units

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • PRINCIPLES OF INHERITANCE AND VARIATION

    AAKASH SERIES|Exercise EXERCISE -II (Sex determination & Genetic Disorders)|46 Videos

  • PRINCIPLES OF INHERITANCE AND VARIATION

    AAKASH SERIES|Exercise EXERCISE -II (NCERT Examplar problems)|18 Videos

  • PRINCIPLES OF INHERITANCE AND VARIATION

    AAKASH SERIES|Exercise EXERCISE-I (Sex determination & Genetic Disorders)|44 Videos

  • PRINCIPLES AND PROCESSES

    AAKASH SERIES|Exercise Exercise - III (Previous AIPMT/NEET Questions)|26 Videos

  • RESPIRATION IN PLANTS

    AAKASH SERIES|Exercise Exercise - III|9 Videos

Similar Questions

Explore conceptually related problems

An individual homozygous for gene a and b is cross with wild type and F_1 was back crossed with the double recessive. The appearance of the offspring is as follows ++ to 39 ab to 31 a+ to 17 +b to 13 Find out the distance between genes a and b .

F_(1) plants crossed with dominant individuals will yield a progeny of

When an "F"_(1) individual is crossed with its either of the two parents, the cross is known as:

$ A cross between the pure recessive parent and the F-1 offspring is called Test cross. ! Test cross is a type of Back cross.

Cross between recessive parent and F_(1) hybrid is called :

In a test cross, the individual is crossed with

A cross between F_(1) hybrid and recessive parent gives a ratio of

Individuals homozygous for ab genes were crossed with wild type (++). The F_(1) hybrid thus produced was test crossed. It produces progeny in following proportion. Now, calculate the distance between a and b genes.

A cross between F_(1) hybrid and its homozygous recessive parent is called

A cross between F_(1) hybrid and its homozygous recessive parent is called

AAKASH SERIES-PRINCIPLES OF INHERITANCE AND VARIATION-EXERCISE -II
  1. Males always inherit these traits from the female parents

    Text Solution

    |

  2. Lack of independent assortment of two genes A and B in fruit fly Droso...

    Text Solution

    |

  3. An individual homozgous for genes cd is crossed with wild type and F(1...

    Text Solution

    |

  4. A test cross of F(1) flies +a/+b produced the followings, ++/ab(R) 9...

    Text Solution

    |

  5. Assume that genes a and b are linked and show 40 % reombination. If ++...

    Text Solution

    |

  6. In a linear chromosome map, distances between 4 loci is as follows, a-...

    Text Solution

    |

  7. What will be the phenotypic ratio in a situation of complementary gene...

    Text Solution

    |

  8. If gene freuency between genes a and c 2%, b and c 13%, b and d 4%, a ...

    Text Solution

    |

  9. The crossing over between homologous chromosomes never exceeds beyond

    Text Solution

    |

  10. Cis tans expression of genes is an example of

    Text Solution

    |

  11. In a genetic cross having recessive epistasis, F(2) phenotypic ratio w...

    Text Solution

    |

  12. Independent genes that copy other genes so as to produce a similar eff...

    Text Solution

    |

  13. Chromosome map is useful for

    Text Solution

    |

  14. The percentage of recombination involving the seed shape and seed colo...

    Text Solution

    |

  15. Genetic map is one that

    Text Solution

    |

  16. Distance between the genes and percentage of recombination shows.

    Text Solution

    |

  17. Type of gene mutation which involves replacement of purine with pyrimi...

    Text Solution

    |

  18. Mutations induced by 5-bromo uracil are

    Text Solution

    |

  19. Given below is the representation of a kind of chromosomal mutation: ...

    Text Solution

    |

  20. Inversion without involving the centromere is called

    Text Solution

    |