POST #12: THE PUNNETT SQUARE
The Punnett Square (O Quadro de Punnett)
Let's have a conversation about Genetics!
In order to really predict hair or eye color, you have to think of the genetic traits of your parents, your grandparents, and even your great-grandparents! Why? Even though some people have dominant traits, like brown hair or eyes, it doesn't mean that they don't also have some recessive genes in their DNA. They might just not be in use! Even though your mom and dad might have dominant traits, they can still pass on recessive genes to you!
Scientists calculate the probability, or likelihood, of someone's genetic traits using a Punnett square. This diagram helps us to see what traits the child could have based on the different combinations of the parents' genes.
Compiled and adapted from https://study.com/academy/lesson/how-to-use-a-punnett-square-lesson-for-kids-definition-examples.html
Examples of Punnet Squares
B - dominant gene b - recessive gene
GLOSSARY:
Now, read, at home, pages 105 and 106 of "Wonder" ("The Punnet Square") in the light of (=considering) the explanation and the glossary above.
Don't forget to take notes and take your doubts (= dúvidas) to the class. And talk to your Biology teacher about the Punnet Square!!!
