Home
Class 12
BIOLOGY
Two genes R and Y are located very close...

Two genes R and Y are located very close on the chromosomal linkage map of maize plant. When RRYY and rryy genotypes are hybridized, the `F_2` segregation will show:

A

Higher number of the parental types

B

Higher number of the recombinant types

C

Segregation in the expected `9:3:3:1` ratio

D

Segregation in `3:1` ratio

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • EVOLUTION

    SARAS PUBLICATION|Exercise EXERCISE|84 Videos
  • Govt Solved Paper 2020 (2)

    SARAS PUBLICATION|Exercise EXERCISE|43 Videos

Similar Questions

Explore conceptually related problems

Read the given paragraph to answer In a certain plant, yellow fruit colour (Y) is dominant to green fruit colour (y) and round shape (R) is dominant to oval shape (r). The two genes involved are located on different chromosomes. Which of the following is correct for the condition when plant YyRr is back crossed with the double recessive parent ?

Read the given paragraph to answer In a certain plant, yellow fruit colour (Y) is dominant to green fruit colour (y) and round shape (R) is dominant to oval shape (r). The two genes involved are located on different chromosomes. Which of the following will result when plant YyRr is self-pollinated ?

Assertion : When yelow bodied, white eyed Drosophila females were hybridised with brown-bodied, red eyeed males , and F_(1) progeny was intercrossed, F_(2) ratio deviated from 9:3:3:1 Reason : When two genes in a dihybrid are on same chromosome, the proportion of parental gene combinations are much higher than the non-parental type

If fa n dg are two distinct linear functions defined on R such that they map [-1,1] onto [0,2] and h : R-{-1,0,1}vecR defined by h(x)=(f(x))/(g(x)), then show that |h(h(x))+h(h(1/x))|> 2.

If y=f(x) is a monotonic function in (a,b), then the area bounded by the ordinates at x=a, x=b, y=f(x) and y=f(c)("where "c in (a,b))" is minimum when "c=(a+b)/(2) . "Proof : " A=int_(a)^(c)(f(c)-f(x))dx+int_(c)^(b)(f(c))dx =f(c)(c-a)-int_(a)^(c) (f(x))dx+int_(a)^(b)(f(x))dx-f(c)(b-c) rArr" "A=[2c-(a+b)]f(c)+int_(c)^(b)(f(x))dx-int_(a)^(c)(f(x))dx Differentiating w.r.t. c, we get (dA)/(dc)=[2c-(a+b)]f'(c)+2f(c)+0-f(c)-(f(c)-0) For maxima and minima , (dA)/(dc)=0 rArr" "f'(c)[2c-(a+b)]=0(as f'(c)ne 0) Hence, c=(a+b)/(2) "Also for "clt(a+b)/(2),(dA)/(dc)lt0" and for "cgt(a+b)/(2),(dA)/(dc)gt0 Hence, A is minimum when c=(a+b)/(2) . If the area enclosed by f(x)= sin x + cos x, y=a between two consecutive points of extremum is minimum, then the value of a is

SARAS PUBLICATION-GENETICS AND EVOLUTION-EXAMPLE
  1. Molecular basis of organ differentiation depends on the modulation in ...

    Text Solution

    |

  2. During transcription, RNA polymerase holoenzyme binds to a gene promo...

    Text Solution

    |

  3. Two genes R and Y are located very close on the chromosomal linkage ma...

    Text Solution

    |

  4. Differentiation of organs and tissues in a developing organism, is ass...

    Text Solution

    |

  5. The two polynucleotide chains in DNA are

    Text Solution

    |

  6. Which one of the following pairs of plant structures has haploid numbe...

    Text Solution

    |

  7. Polytene chromosomes are formed by ………..

    Text Solution

    |

  8. In the DNA molecules.

    Text Solution

    |

  9. Which one of the following scientist's name is correctly matched with ...

    Text Solution

    |

  10. Haploids are more suitable for mutation studies than the diploids. Thi...

    Text Solution

    |

  11. The linking of antibiotic resistance gene with the plasmid vector beca...

    Text Solution

    |

  12. Which one of the following is commonly used in transfer of foreign DNA...

    Text Solution

    |

  13. The genetic defect adenosine deaminase deficiency may be cured permane...

    Text Solution

    |

  14. Which one of the following cannot be explained on the basis of Mendel’...

    Text Solution

    |

  15. ABO blood groups in humans are controlled by the gene I. It has three ...

    Text Solution

    |

  16. Select the correct statement from the ones given below with respect to...

    Text Solution

    |

  17. The one aspect which is not a salient feature of genetic code, is its ...

    Text Solution

    |

  18. Which one of the following palindromic base sequence in DNA can be eas...

    Text Solution

    |

  19. DNAor RNA segment tagged with a radioactive molecule is called

    Text Solution

    |

  20. Restriction endonucleases are enzymes which

    Text Solution

    |