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The ABCs of DNA — IBD vs IBS vs mIBC

The ABCs of DNA — IBD vs IBS vs mIBC

IBD vs. IBS When you are matched up to a potential family member at one of the genetic testing services, they do so by finding segments of DNA where the alleles are the same over a minimum distance of both your and your match’s DNA. At least that’s what is supposed to happen. There are several things that can go wrong when matching segments between people and here we’re going to discuss the unfortunate incident of … Read entire article »

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The ABCs of DNA — Chromosomes

The ABCs of DNA — Chromosomes

  What is a Chromosome?   When the very long polymeric molecule of DNA is wound around a protein called a histone into a thread like strand, it is called a chromosome. The histone not only supports the DNA strand, but on occasion it can control DNA expression by folding the DNA over a particular gene, physically blocking access to the gene and preventing it from being ‘read’ or transcribed.The DNA of eukaryotes and archae exists as chromosomes. Not … Read entire article »

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The ABCs of DNA — The Cell

The ABCs of DNA — The Cell

What is a Cell? The simplest organisms are single-celled creatures such as bacteria and algae while more complex organisms, such as humans and trees, are comprised of many cells with specialized functions. Cells consist of membrane bound collections of DNA, proteins, sugars and cytosol –the jelly-like liquid inside the cell. The semi-porous cell membrane controls what enters and exits the cell. Scientists split cells into two main types: prokaryotic cells, such as those comprising bacteria and … Read entire article »

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The ABCs of DNA — Part 2

The ABCs of DNA — Part 2

DNA Structure Nuclear DNA molecules consist of a string of ring-shaped sugar molecules attached to a phosphate backbone on one side forming the sides of the twisted-ladder-like structure and one of the four DNA bases on the other. As the name deoxyribo suggests, the ring-shaped 5-carbon sugar on nuclear DNA has lost an oxygen molecule. There are four bases* that comprise the DNA code: adenine (A), guanine (G), cytosine (C), and thymine (T). The arrangement of … Read entire article »

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The ABCs of DNA — Part 1

The ABCs of DNA — Part 1

  DNA, short for deoxyribonucleic acid, is the blueprint for everything that makes you – you! Every living creature on Earth — and some quasi-living creatures such as viruses and prions – have a DNA blueprint telling it how and when to make which proteins. Proteins are complex polymers that constitute the basic building material of a living creature. Like a blueprint for a building, DNA uses a universal code to transmit its instructions to the … Read entire article »

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