The first is for the unlinked gene which determines that the unlinked gene hypothesis follows that of Mendel’s Law of Independent assortment. This law states that if the two genes are not linked they should segregate independently at metaphase I of meiosis. So if the gray spore and the tan spore are considered unlinked then the frequency of the PD (parental ditype) and NPD (non-parental ditype) asci along with the segregation independently, should be equal. The second hypothesis is for linked genes and this is that both of the spore coloration are seen on the same pair of homologous chromosomes. This just makes them inherited together due to the linkage physically together. The rule states that Mendel’s law doesn’t correspond with this and it would not make sense if the genes were linked. If the genes were linked then the PD and T asci will show and only a small portion of the NPD would show up. The hypothesis would be that if the gray spore and tan spore genes are linked together, two genes should not segregate independently and the PD frequency should be more than the NPD asci
The first is for the unlinked gene which determines that the unlinked gene hypothesis follows that of Mendel’s Law of Independent assortment. This law states that if the two genes are not linked they should segregate independently at metaphase I of meiosis. So if the gray spore and the tan spore are considered unlinked then the frequency of the PD (parental ditype) and NPD (non-parental ditype) asci along with the segregation independently, should be equal. The second hypothesis is for linked genes and this is that both of the spore coloration are seen on the same pair of homologous chromosomes. This just makes them inherited together due to the linkage physically together. The rule states that Mendel’s law doesn’t correspond with this and it would not make sense if the genes were linked. If the genes were linked then the PD and T asci will show and only a small portion of the NPD would show up. The hypothesis would be that if the gray spore and tan spore genes are linked together, two genes should not segregate independently and the PD frequency should be more than the NPD asci