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Is it true that your genetics change every seven years?

I'm asking because i wasn't allergic to cats until I was seven and my friend told me that it's because your genetics change every year, but she isn't always the most reliable resource.

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Genetics is in your DNA .. it doesn't 'change' .. There are many factors that cause an allergy to develop .. You may even have a certain level of resistance, but over time, the resistance wears down.

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idk if its an exact number of yrs, maybe just i guess how ur affected by ur environment, like gradually builds up, and genetics probably just develop i guess

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It is not true that the genetics change after every seven years. This is because, the genes that correspond to numerous biological traits develop in the initial stage of an organism's development and stay the same during their life time.

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