THANK YOU Imagine that you attempted to recreate Mendels wor

THANK YOU

Imagine that you attempted to recreate Mendel\'s work with garden peas. You began by crossing true breeding violet-flowered, tall plants with white-flowered dwarf plants. After self-crossing the F1 generation, you obtain the following phenotypes in the F2 generation 80 tall, violet flowers 36 tall, white flowers 39 dwarf, violet flowers 5 dwarf, white flowers Probabity P value 090 020 020 0001 CA58 237 46A 2.20 336 778 9/49 924 2052 7 217 283 1407 1848 2432 273 SS3 336 2009 Part E Use a chi-square analysis to test the hypothesis that the F2 data for stem length (tall:dwarf) is consistent with Mendel\'s law of segregation. Calculate the chi square value. Express your answer to two decimal points (example: 100.00). Submit My Answers Give Up Incorrect; Try Again; 4 attempts remaining

Solution

In the question we have four alleles: tall (p), dwarf (q), violet ( r) and white (d). according Hardy Weinberg law, p+q+r+d = 1; and according the Mendel’s law of segregation these would have equally 0.25 frequencies.

Find chi square value by using following formula:

X² for single allele = (Allelic progenies – Expected progenies)² / Total progenies

For example:

X² for tall allele (p) =

Allelic progenies are 80+36 = 116,

Expected progenies =Frequency x Population = 0.25x 160 = 40

Therefore X² value for allele p = (116-40)²/40 = (76)² / 40 = 144.4

Then do the rest according the following example:

Chi square (X²) test = (observed- expected)² /expected = (O-E)²/ E

alleles

Observed population

Expected population

(O-E)²

X² values

M

76

50

676

13.52

N

36

50

196

3.92

MN

88

100

144

1.44

Total chi square value

18.88

alleles	Observed population	Expected population	(O-E)2	X2 values
M	76	50	676	13.52
N	36	50	196	3.92
MN	88	100	144	1.44
Total chi square value				18.88