In pea plants, green pods (G) are dominant to yellow pods (g) and tall plants (T) are dominant to short plants (t). A scientist crosses a GgTt pea plant with a ggtt pea plant and the following offspring are produced: Phenotype Number of Offspring Green, tall 723 Yellow, short 749 Green, short 48 Yellow, tall 46 What is the percent recombination frequency for this cross

RF = 6.0025%

Explanation:

Given

Green pods (G) are dominant over yellow pods (g);

Tall plants (T) are dominant on short plant (t)

Parents are GgTt (Green tall) and ggtt (yellow short), so their cross is;

Progeny;

Green tall 723.

Yellow short 749,

Green short 48,

Yellow tall 46

Green tall and yellow short are parental type, so they are non-recombinants;

so, 723 + 749 = 1566 are non-recombinants;

Green short and yellow tall are recombinants,

so 48 + 46=94 are recombinants;

Recombination frequency (RF) = Total no. of recombinants progeny / total progeny * 100

Total progeny = 1566;

Total recombinants = 94

RF = 94:1566*100

= 6.0025%