Phenotype Observed Expected (observed - expected) or (o-e) (o-e) 2 (o-e) 2 /e Gr

Question

Phenotype Observed Expected (observed - expected) or (o-e) (o-e)2 (o-e)2/e Green 22 Yellow-Green 50 Albino 12 I'm having trouble as how to come up with the expected. Will someone explain to me how to get the expected in thisproblem? Phenotype Observed Expected (observed - expected) or (o-e) (o-e)2 (o-e)2/e Green 22 Yellow-Green 50 Albino 12 I'm having trouble as how to come up with the expected. Will someone explain to me how to get the expected in thisproblem? Phenotype Observed Expected (observed - expected) or (o-e) (o-e)2 (o-e)2/e Green 22 Yellow-Green 50 Albino 12

Explanation / Answer

                                           Gg x Gg

   F1                22GG :         50 Gg :         12gg     ------------observed

                  (green:           yellow green            :albino)

                                 Gg x Gg

G

g

G

G G

Gg

g

g G

g g

Expected ratio is        1 green  :2 yellow green:     1 albino

                                     21     42            21

Phenotype

Observed

Expected

(observed - expected) or (o-e)

(o-e)2

(o-e)2/e

Green

22

21

Yellow-Green

50

42

Albino

12

21

G

g

G

G G

Gg

g

g G

g g

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