One hypothesis that proposes to explain senescence notes that cells that divide throughout the life course have shortened dna sequences at the end of the chromosomes. this is referred to as the hypothesis. hadromere carsonomere telomere intron none of these

Metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). ... Metamorphism produced with increasing pressure and temperature conditions is known as prograde metamorphism

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