A dihybrid com plant was test crossed and five possible data

A dihybrid com plant was test crossed, and five possible datasets are shown. _____/4 Indicate which dataset(s) would suggest that the genes E and F are genetically linked.

Solution

Data set 1:

total number of plants = 239 + 69 + 95 + 247 = 650

Frequency of gene E = 239 + 69 = 308/650 = 0.47

Frequency of gene F = 239 + 95 = 334/650 = 0.51

Dataset 2:

Total number of plants = 368 + 112 + 125 + 38 = 643

Frequency of gene E = 368 + 112 = 480/643 = 0.75

Frequency of gene F = 368 + 125 = 493 / 643 = 0.77

Data set 3:

Total number of plants = 167 + 171 + 162 + 150 = 650

Frequency of gene E = 167 + 171 = 338 / 650 = 0.52

Frequency of gene F = 167 + 162 = 329 / 650 = 0.50

Data set 4:

Total number of plants = 301 + 287 + 25 + 37 = 650

Frequency of gene E = 301 + 287 = 588 / 650 = 0.90

Frequency of gene F = 301 + 25 = 326 / 650 = 0.50

Data set 5:

Total number of plants = 97 + 229 + 217 + 107 = 650

Frequency of gene E = 97 + 229 = 326 / 650 = 0.50

Frequency of gene F = 97 + 217 = 314 / 650 = 0.48

The data set 2,3 and 5 indicate that the genes E and F are linked.