EMU-APPENDIX
BIOL 301/Genetics Exam I: Mendelian Genetics Name: WI 02
6. In mice, the allele C for colored fur is dominant over the allele, c for white fur, and the
allele V for normal behavior is dominant over the allele v for waltzing behavior. Due to sloppy
record keeping the genotypes of the parents are not known. But a mating between a colored,
normal mouse with a white waltzing mouse produced 7 normal mice, 6 normal colored, waltzing
mice, and 7 white mice with normal behavior.
What is the genotype of the parents? (Note: this is your hypothesis). (4 pts)
Perform a X2 test to test your hypothesis. Show your work here. (4 pts)
How many degrees of freedom are there is this experiment? (2 pts)
Do you accept or reject your hypothesis, based on the X2 test? (2 pts)
Explain your conclusions from this experiment and the Chi Squared test. (4 pts)
TABLE 3.2
Table of Chi-Square (X-) 5% Critical Values"
Dqrees of Freedom 5"If, Critical Value
1 3.841
2 5.991
3 7.815
4 9.488
5 11.070
6 12.592
7 14.067
8 15.507
9 16.919
10 18.307
15 24.996
20 31.410
25 37.652
30 43.773
'Selected entrie- '. um R. A. Fisher and Yates, 1943, Slatistical Tables far Biological, Agricultural and Medical Research. Oliver and Boyd, London
73
