Mendelian Cracker Essay

Improved Essays
Part I – Discovery
1. L.H. Snyder used by the term “Mendelian marker” to mean that any Mendelian trait that is retested can be used as a marker for a future experiment.
2. The question that Dr. Snyder will be addressing in his study is “Can PTC be used as a Mendelian marker if it is inherited?”
3. His hypothesis is if PTC taster is inherited, it can be used as a Mendelian marker.
Part II- Mendelian Genetics
1. The kind of evidence that would indicate that the ability to taste PTC is inherited is by looking at the table. By observing the table, we can clearly see that the ability to taste PTC is inherited. From the table both groups, the one that “both parents can taste” and the other one that “one parent can taste and the other one cannot tastes” came out the higher number of children can taste the PTC. While in the group of “neither parent can taste” there were not children that can
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For Snyder, it was important to verify that males and females had similar proportions of tasters and non-taster because if gender affected PTC sensitivity the amount of tasters and non-taster in both group will be represented by equally to avoid errors.
3. The reason why the couple that can taste the PTC has children that cannot taste PTC is because there is a minor chance that the children that cannot taste PTC have the genetic recessive allele from both parents.
4. The significance of the fact that couples who cannot taste PTC never has children who can taste the PTC is because it is genetic. So children that came from parents that are not taster to PTC, they will be born without the gene because their parents never had the gene.
5. Based on this data, I can conclude that PTC blindness has two characteristics: one depend on the dominant allele being a taster and the other one depend on recessive homozygous allele being a non-taster. My evidence in this case is that having parent that cannot taste will give forth children that cannot taste it aswell.
6. Parents can taste:

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