P1 F1 F2 1. Line 1 with pisatin 3 with pisatin X resistant 1 no pisatin www 2. Line 2 X resistant no pisatin 3 no pisatin ww 1 with pisatin 3. Line 1 X Line 2 no pisatin 13 no pisatin W ww 3 with pisatin TIP: Use the F2 ONLY of the 3d cross for the 7-step solution. NO NEED to show the solution. Just write the genotypes of all the individuals in the three crosses.

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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Genetics :

Pisatin is a chemical used for defense by Pisum sativum against parasitic fungi (thus resistant). Two susceptible pure (homozygous) lines of peas were obtained and used in the following crosses:

P1
F1
F2
1. Line 1
with pisatin
3 with pisatin
X
resistant
1 no pisatin
www
2. Line 2
X
resistant
no pisatin
3 no pisatin
ww
1 with pisatin
3. Line 1
X
Line 2
no pisatin
13 no pisatin
W ww
3 with pisatin
TIP: Use the F2 ONLY of the 3d cross for the 7-step solution. NO NEED to show the solution. Just
write the genotypes of all the individuals in the three crosses.
Transcribed Image Text:P1 F1 F2 1. Line 1 with pisatin 3 with pisatin X resistant 1 no pisatin www 2. Line 2 X resistant no pisatin 3 no pisatin ww 1 with pisatin 3. Line 1 X Line 2 no pisatin 13 no pisatin W ww 3 with pisatin TIP: Use the F2 ONLY of the 3d cross for the 7-step solution. NO NEED to show the solution. Just write the genotypes of all the individuals in the three crosses.
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