DNA helps scientists to better classify organisms is because each organ has a specific kind of DNA. For an example, brains and hearts have many small types of RNA. So if a scientists see some RNA they know that its a heart or a brain.
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Drosophila biology: The common fruit fly is a model organism for genetic studies. The reason it is so widely used is because it is easily cultured in the lab, has a short generation time, and can produce many offspring. ... Larvae tissues degenerate and reorganize forming an adult fly inside the pupal case.
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Answer:
ventricular septal defect
Explanation:
The ventricular septal defect is a very common defect in the septum. It is characterised by a hole or defect that divides the two sides of the heart hence causing communication between the ventricular cavities.