Consider just three of Earth’s inhabitants:a bright yellow daffodil that greets the spring, the single-celled creature called Thermococcus that lives in boiling hot springs, and you. Even a science-fiction writer inventing a story set on a distant planet could hardly imagine three more different forms of life. Yet you, Thermococcus,and the daffodil are related! Indeed, all of the Earth’s billions of living things are kin to each other.
And every living thing does one thing the same way: To make more of itself, it first copies its
molecular instruction manual—its genes—and then passes this information on to its offspring. This cycle has been repeated for three and a half billion years.But how did we and our very distant relatives
come to look so different and develop so many different ways of getting along in the world? A century ago, researchers began to answer that question with the help of a science called genetics.
Género: Ciencia,Biología,Genética
Tamaño: 3.791 Kb
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Idioma del texto: Castellano
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