The linkage map of $X$-chromosome of fruit fly has $66$ units with yellow body gene $(y)$ at one end and bobbed hair $(b)$ gene at the other end. The recombination frequency between these two genes ($y$ and $b$) should be

  • [AIPMT 2003]
  • A

    $100\%$

  • B

    $66\%$

  • C

    $> 50\%$

  • D

    $5.50\%$

Similar Questions

Two heterozygous parents are crossed. If the two loci are linked what would be the distribution of phenotypic features in $\mathrm{F}_{2}$ generation for a dihybrid cross?

Assertion : In case of incomplete linkage, linked gene show new combination along with parental combination.

Reason : In case of incomplete linkage, linked genes are separated by crossing over.

  • [AIIMS 2010]

Crossing over causes

  • [AIPMT 1991]

Describe linkage and recombination in detail.
 

The word 'crossing over' is given by