4. In Wisconsin Fast plants, purple stems (P) are dominant to green stems (p). Plants can also be tall (T) or dwarf (t). Two tall plants with purple stems are crossed with results shown in the chart. Do the results support a hypothesis that both plants were heterozygous? Show a chi square analysis to support your position. (Observed - Expected) Expected Observed Expected

4. In Wisconsin Fast plants, purple stems (P) are dominant to green stems (p). Plants can also be tall (T) or dwarf (t). Two tall plants with purple stems are crossed with results shown in the chart. Do the results support a hypothesis that both plants were heterozygous? Show a chi square analysis to support your position. (Observed - Expected) Expected Observed Expected

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter3: Transmission Of Genes From Generation To Generation

Section: Chapter Questions

Problem 22QP: More Crosses with Pea Plants: The Principle of Independent Assortment In pea plants, long stems are...

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Question

Question 4 please

ANALYSIS:
4. In Wisconsin Fast plants, purple stems (P) are dominant to green stems (p). Plants can also be tall (T) or
dwarf (t). Two tall plants with purple stems are crossed with results shown in the chart. Do the results
support a hypothesis that both plants were heterozygous? Show a chi square analysis to support your
position.
(Observed - Expected)?
Expected
Observed
Expected
Purple, tall
48
Purple, dwarf
16
Green, tall
12
Green, dwarf
Summed X = 1.011 (good fit)
ANALYSIS:
x* critical values
probability
50
.025
5.024
df
995
90
.10
05
1
.000
.016
455
2.706 3.841
1.386 4.605 5.991 | 7.378
e
.211
.584
207 1.064 3.357 | 7.779 | 9.488 11.143
.010
.072
2.366 6.251
7.815 9.348
4
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Chi square analysis is a statistical test to measure differences between observed and expected data.

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