. In foxgloves, three different petal phenotypes exist:white with red spots (WR), dark red (DR), and lightred (LR). Two different kinds of true-breeding WRstrains (WR-1 and WR-2) can be distinguished bytwo-generation intercrosses with true-breeding DRand LR strains:F2Parental F1 WR LR DR1 WR-1 × LR all WR 480 39 1192 WR-1 × DR all WR 99 0 323 DR × LR all DR 0 43 1324 WR-2 × LR all WR 193 64 05 WR-2 × DR all WR 286 24 74 a. What can you conclude about the inheritance ofthe petal phenotypes in foxgloves?b. Ascribe genotypes to the four true-breeding parental strains (WR-1, WR-2, DR, and LR).c. A WR plant from the F2 generation of cross 1 isnow crossed with an LR plant. Of 500 total progeny from this cross, there were 253 WR, 124 DR,and 123 LR plants. What are the genotypes of theparents in this WR × LR mating?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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. In foxgloves, three different petal phenotypes exist:
white with red spots (WR), dark red (DR), and light
red (LR). Two different kinds of true-breeding WR
strains (WR-1 and WR-2) can be distinguished by
two-generation intercrosses with true-breeding DR
and LR strains:
F2
Parental F1 WR LR DR
1 WR-1 × LR all WR 480 39 119
2 WR-1 × DR all WR 99 0 32
3 DR × LR all DR 0 43 132
4 WR-2 × LR all WR 193 64 0
5 WR-2 × DR all WR 286 24 74 a. What can you conclude about the inheritance of
the petal phenotypes in foxgloves?
b. Ascribe genotypes to the four true-breeding parental strains (WR-1, WR-2, DR, and LR).
c. A WR plant from the F2 generation of cross 1 is
now crossed with an LR plant. Of 500 total progeny from this cross, there were 253 WR, 124 DR,
and 123 LR plants. What are the genotypes of the
parents in this WR × LR mating?

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