ACTIVITY 2: Read the text, and answer the last two questions below. (lea el texto y responda las dos preguntas de la parte de abajo). There are many common misconceptions about DNA testing. Let’s address them one by one so you can learn the truth about your genetic genealogy testing options. Myth 1: Geneticists use hair and blood samples to trace a person’s ancestry. Although scientists do utilize hair and blood samples for paternity tests and forensic analysis, there’s no need to draw blood or collect hairs for a genetic genealogy test. You can order a DNA test for yourself or someone else. Myth 2: A DNA test can pinpoint precisely where your ancestors lived or which tribe they belonged to. If your ancestors stayed in one geographic region and never allowed outsiders to enter, it would be relatively easy to distinguish their DNA (and yours) from the DNA of people living in other regions. But most of our ancestors didn’t stay in one place. Myth 3: To find out if you and another person descend from the same great-great-grandfather, you need to dig up his body for a DNA sample to test. No. There are easier ways to prove a genetic link that don’t involve literally turning relatives over in their graves. To find out if you and someone else descend from the same male ancestor, you should turn to Y-DNA testing, using the Y-chromosome passed down by males. Myth 4: The results of ancestral DNA tests are 99.9% accurate, just like the DNA tests on CSI. Genetic genealogy isn’t an exact science it involves interpretation. Remember that a genetic mutation can occur at any time, so even a father’s and son’s results might not match exactly. Myth 5: If you take a DNA test, you can find out who your greatgrandmother’s parents were. Your DNA test results won’t reveal your ancestors’ names, but you can use them to do a little detective work online. Enter your Y-DNA marker values—or your relative’s—into a public DNA database. • Which of these myths did you believe? ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________• After reading this text, do you think DNA testing is valuable? Why or why not? __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________​
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