In an experiment, individual homozygous for ' ab ' gene, were crossed with wild type. The F1 hybrid was test crossed and progenies produced in following ratio: ++/ab arrow 896 ab/ab arrow 880 +a/ab arrow 108 +b/ab arrow 116 Calculate the distance between a and b gene

Question

In an experiment, individual homozygous for ' ab ' gene, were crossed with wild type. The F1 hybrid was test crossed and progenies produced in following ratio: ++/ab arrow 896 ab/ab arrow 880 +a/ab arrow 108 +b/ab arrow 116 Calculate the distance between a and b gene (A) 22.4cM (B) 44cM (C) 11.2cM (D) 45cM

Tardigrade Admin · Accepted Answer

The distance between c and d genes can be calculated by the following formula: = (Recombinants / Total individuals) × 100 Total individuals = 2000 Recombinants = 224 =(.224/2000.)× 100=11.2

Q. In an experiment, individual homozygous for ' $ab$ ' gene, were crossed with wild type. The $F_{1}$ hybrid was test crossed and progenies produced in following ratio :
$+ + / ab \to 896$
$ab / ab \to 880$
$+ a / ab \to 108$
$+ b / ab \to 116$
Calculate the distance between $a$ and $b$ gene

$22.4 c M$

$44 c M$

$11.2 c M$

$45 c M$

The distance between c and d genes can be calculated by the following formula:
= (Recombinants / Total individuals) $\times 100$
Total individuals = $2000$
Recombinants = $224$
$= (224/2000) \times 100 = 11.2$

Q. In an experiment, individual homozygous for ' ab ' gene, were crossed with wild type. The F1​ hybrid was test crossed and progenies produced in following ratio : ++/ab→896 ab/ab→880 +a/ab→108 +b/ab→116 Calculate the distance between a and b gene

22.4cM

44cM

11.2cM

45cM