Three recessive genes are linked on the third chromosome: g (gray), m (micro), and p (plum). The wild type heterozygote in the F1 is test crossed and the following F2 progeny (total of 1000) were obtained: Which gene is in the middle? 100 gpm + ++ 110 +p m ++g 25 21 +gm +gp ++p 144 240 140 ++ m 220 m

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Three recessive genes are linked on the third chromosome: g (gray), m (micro), and p (plum). The wild type
heterozygote in the F1 is test crossed and the following F2 progeny (total of 1000) were obtained:
Which gene is in the middle?
100
g p m
+++
110
25
+pm
+ + g
21
+g m
144
240
+gp
++p
140
+ + m
220
Transcribed Image Text:Three recessive genes are linked on the third chromosome: g (gray), m (micro), and p (plum). The wild type heterozygote in the F1 is test crossed and the following F2 progeny (total of 1000) were obtained: Which gene is in the middle? 100 g p m +++ 110 25 +pm + + g 21 +g m 144 240 +gp ++p 140 + + m 220
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