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Chromosome Mapping – Linkage

We were learning about chromosome mapping with this lab. We had to throw a stick across a line and marker how many times a gene had a crossover; we did that a hundred times. Then we had to calculate the frequency of each by taking the number of times that gene had a cross over, … Continue reading Chromosome Mapping – Linkage

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Nail Patella Syndrome – Linkage

This lab was about nail patella syndrome which is a dominant trait on chromosome 9, where the individual has oddly-shaped finger and toenails, as well has peculiar kneecaps. This is part of a linkage trait because it’s on the same chromosome as the blood types and this can both cause what you have. In this … Continue reading Nail Patella Syndrome – Linkage

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Complex Traits Blog

There are monogenic and complex traits within us. People are mostly taught how traits have two alleles and can be influenced with those genes. They provide a classic pattern with dominant and recessive. This is classified as monogenic traits. Yet, there are the traits that are influenced by several genes causing different variations, not following … Continue reading Complex Traits Blog

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Josie – Complex traits

This case study is about a woman named Josie who was experiencing very weird symptoms, wanting to drink blood, had photo-sensitivity, and seemed to be in a state of madness. She was diagnosed with Porphyria, which mimics symptoms of other disorders. This goes with complex traits, because more than one gene is affected to create … Continue reading Josie – Complex traits

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When a Gene turned Off Is a Matter of Life or Death

This case study is about how epigenetics influence gene regulation, as epigentics are capable of turning genes off and on. This study is about a boy who had an aggressive cancer in the occipital lobe of his brain. People with this cancer had a lower survival rate depending on their genetics and how they would … Continue reading When a Gene turned Off Is a Matter of Life or Death

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Identical Twins, Identical Fates? Introduction to Epigenetics

This was a case study about twin sisters, where one has schizophrenia while the other didn’t. This brought into question, how alike are twins? Identical twins are born with the same DNA, but over time, epigenetics cause modifications to the DNA, making the twins less identical genetically. In this case study, the twin who was … Continue reading Identical Twins, Identical Fates? Introduction to Epigenetics