Karyotypes

notes

1. Karyotypes

2. True or False: If you took a cheek cell from a random person, you could tell if that person was male or female.

3. What is a karyotype? A picture that shows all the chromosomes inside a cell.

4. Processing Piece: Draw a picture of a karyotype and label it.

5. What are autosomal chromosomes? All chromosomes that are not sex chromosomes. C hromosomes that are determine a person’s gender. X chromosomes and Y chromosomes. What are sex chromosomes?

6. How can you determine a person’s gender by looking at their karyotype? Women have two X chromosomes: XX Men have an X and a Y chromosome: XY

7. Processing Piece: Draw the sex chromosomes that you would see in the karyotype of a male person, and label it “male.” Draw the sex chromosomes that you would see in the karyotype of a female person, and label it “female.”

8. How can you determine whether or not a person is human by looking at their karyotype? If the karyotype contains 46 chromosomes (44 autosomal chromosomes, and 2 sex chromosomes), the person must be a human.

9. Processing Piece: A karyotype from a diploid cell reveals that the cell contains 20 chromosomes. Is this a human cell? How do you know?

10. Exit Ticket A karyotype from a diploid cell reveals that the cell contains 30 chromosomes. Is this a human cell? How do you know? A karyotype from a human cell reveals that there are two X chromosomes present. 3) Is this person a male or female? 4) How do you know?