Home
Class 12
BIOLOGY
Grain colour in wheat is determined by 3...

Grain colour in wheat is determined by 3 pairs of polygenes. A cross between AABBCC x aabbcc will produce progeny in `F_(2)` in what proportion that is likely to resemble either parent.

A

None

B

Half

C

Less than 5%

D

One third

Text Solution

Verified by Experts

The correct Answer is:
C
Only two out of 64 (one with pure dominant, one with pure recessive ) resemble parents. The percentage is 2/64`xx100`.
Promotional Banner

Topper's Solved these Questions

  • GENETIC BASIS OF INHERITANCE

    DINESH PUBLICATION ENGLISH|Exercise Check your Grasp|30 Videos

  • GENETIC BASIS OF INHERITANCE

    DINESH PUBLICATION ENGLISH|Exercise Check your Grasp|30 Videos

  • FRUIT AND SEED DISPERSAL

    DINESH PUBLICATION ENGLISH|Exercise CHECK YOUR GRASP|10 Videos

  • GROWTH, REPAIR, REGENERATION AND AGEING

    DINESH PUBLICATION ENGLISH|Exercise Brain Teasers-VI[B]|6 Videos

Similar Questions

Explore conceptually related problems

How many type of gametes are found in F_(1) progeny of cross between AABBCC and aabbcc? (a) 3 (b) 8 (c) 27 (d) 64

In a testcross AaBb x aabb, 90% of the progeny is like parents. Determine: Is there any crossing over between the genes?

What is the cross between the progeny of F_(1) and the homozygous recessive parent called? How is it useful?

A trihybrid cross is made between two yeasts, both with genotype AaBbCc. What proportion of the offspring will be of the genotype aabbcc?

When a red grain variety of wheat is crossed with another white grain vartiety F_(1) hybrid is produced. On selfing of this F_(1)- hybrid, how many offsprings of F_(2)- generation resemble phenotypically to it's parents (let grain colour of wheat controlled by three gene pairs )

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.

Find correct number of statement (s) w.r.t test cross. (i) It s cross between dominant unknown genotype and recessive parent. (ii) It is cross between the progeny of F1 generation and recessive parent. (iii) To determine the genotype of a tall pea plant at F2 generation (iv) to find out the genotype of dwarf pea plant in F22 generation

In a plant three dominat independently assorting gene A, B and C are essential for production of purple pigment. If any of the genes or all three genes are present in recessive condition then flower is coloures Raw material overset(A) to X overset(B) to T overset(C) to Z pigment A purple lant with genotype AABBCC crossed with a colourless plant with genotype aabbcc gibes purple F_(1) what proportion of coloured offspring in F_(2) -

In a cross between negro and albino skin colour of humans showing polygenic inheritance, the phenotypic ratio in F_(2) generation will be

DINESH PUBLICATION ENGLISH-GENETIC BASIS OF INHERITANCE-Revision Questions From Competitive Exams
  1. In Drosophila gene for white eye mutation is also responsible for depi...

    Text Solution

    |

  2. In order to find out the different types of gametes produced by a pea ...

    Text Solution

    |

  3. Grain colour in wheat is determined by 3 pairs of polygenes. A cross b...

    Text Solution

    |

  4. In Pisum sativum there are 14 Chromosomes. How many pairs with differe...

    Text Solution

    |

  5. Pure tall plant is crossed to dwarf plant. F(1) generation consists of...

    Text Solution

    |

  6. A baby of blood group A cannot belong to parents of blood group (a) Hu...

    Text Solution

    |

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

    Text Solution

    |

  8. Find out the incorrect statement. (a) There are several pairs of const...

    Text Solution

    |

  9. Cross between homozygous black rough (BBRR) guinea pig and homozygous ...

    Text Solution

    |

  10. Phenotype of an organism is the result of

    Text Solution

    |

  11. In Mendel's experiments with garden pea, round seed shape (RR) was dom...

    Text Solution

    |

  12. Test cross involves

    Text Solution

    |

  13. Two pea plants were subjected cross pollination. Of the 183 plants pro...

    Text Solution

    |

  14. Which pair of features represents polygenic inheritance ? (a) Human ey...

    Text Solution

    |

  15. Matting of an organism to a double recessive in order to determine whe...

    Text Solution

    |

  16. Human skin colour is polygenic trait with each dominant determing a pa...

    Text Solution

    |

  17. Test cross is performed to know the genotype. It is cross between

    Text Solution

    |

  18. Possible blood groups of children born to parents having A and AB gr...

    Text Solution

    |

  19. When pure long plant having white flower is crossed with pure dwarf pl...

    Text Solution

    |

  20. Which of the following is correct for dihybrid cross ?

    Text Solution

    |