1. In Drosophila (fruit flies) ebony body color and being eyeless are both autosomal recessive traits. An ebony fly is mated with an eyeless fly and the F1 are all wild type.
The F2 are: 590 wild type
185 eyeless
200 ebony
72 eyeless and ebony
Test the hypothesis that this was a dihybrid cross (ratios) using the Chi Square test.
2. In corn, purple kernels are dominant over yellow kernels, and full kernels are dominant over shrunken kernels.
A plant with purple, full kernels is crossed with a plant having yellow, shrunken kernels and the following progeny are obtained:
Purple, full 115
Purple, shrunken 110
Yellow, full 95
Yellow, shrunken 94
Determine the most likely genotypes for the parents and progeny.
Test your genetic hypothesis (ratios) with a Chi Square test until it is accepted.
3. A corn plant with purple, full kernels is crossed with a plant having purple, full kernels. The following progeny are obtained:
Purple, full 100
Purple, shrunken 36
Yellow, full 30
Yellow, shrunken 8
Determine the genotypes of the parents and progeny.
Test your hypothesis with a Chi square test until it is accepted.
4. A candy manufacturer claims that it puts equal numbers of different colored candy in each packet they sell. You buy a packet and find these results:
Red: 101 Green: 120 Blue: 133 Orange: 103 Yellow: 110 Brown: 153
Does the manufacturerâs claim hold true? Use the Chi square test to determine whether to accept or reject this claim (that each bag has the same number of each color of candy).
1. In Drosophila (fruit flies) ebony body color and being eyeless are both autosomal recessive traits. An ebony fly is mated with an eyeless fly and the F1 are all wild type.
The F2 are: 590 wild type
185 eyeless
200 ebony
72 eyeless and ebony
Test the hypothesis that this was a dihybrid cross (ratios) using the Chi Square test.
2. In corn, purple kernels are dominant over yellow kernels, and full kernels are dominant over shrunken kernels.
A plant with purple, full kernels is crossed with a plant having yellow, shrunken kernels and the following progeny are obtained:
Purple, full 115
Purple, shrunken 110
Yellow, full 95
Yellow, shrunken 94
Determine the most likely genotypes for the parents and progeny.
Test your genetic hypothesis (ratios) with a Chi Square test until it is accepted.
3. A corn plant with purple, full kernels is crossed with a plant having purple, full kernels. The following progeny are obtained:
Purple, full 100
Purple, shrunken 36
Yellow, full 30
Yellow, shrunken 8
Determine the genotypes of the parents and progeny.
Test your hypothesis with a Chi square test until it is accepted.
4. A candy manufacturer claims that it puts equal numbers of different colored candy in each packet they sell. You buy a packet and find these results:
Red: 101 Green: 120 Blue: 133 Orange: 103 Yellow: 110 Brown: 153
Does the manufacturerâs claim hold true? Use the Chi square test to determine whether to accept or reject this claim (that each bag has the same number of each color of candy).
