Back to School: All About Sex… Chromosomes

We know you’ve been studying hard at 23andMe U., but you’ve still got one more quiz to complete.
This one hinges on some of the genetic differences between men and women.

So before you matriculate, here’s the last quiz. Now don’t sweat it, you’ll do fine and we’ll even give you some hints along the way to help!

You’ve learned that we all have 23 pairs of chromosomes. If you were paying attention in the last quiz you’ll know that 22 of those pairs contain the same genes on each chromosome and are called “autosomes”. These question are about the all-important 23rd pair of chromosomes. Watch the videos and then test your knowledge.

Genetics 101 Part 3: Where Do Genes Come From

Description:
Find out how chromosomes and genes are passed down from parent to child.

Time:
4 min 20 sec

Genetics 101 Part 5: Why No Why?

Description:
Find out why women don’t have a Y chromosome, but can still learn about their paternal ancestry.

Time:
1 min 10 sec

Update: This quiz is officially over! Check out the answers here.

You have now completed the 23rd Chromosome quiz. Click on the certificate below and get a larger image which you can print out and display it with pride.

Want to continue your education? You can learn about yourself from both a health and ancestry perspective on 23andMe. Not yet a customer? Visit our store.


  • Altorfer

    The Y-chromosom doesn’t make a boy to a boy! Even the genes which are need for the two biological substrates sexual orientation and sexual identification aren’t on the Y-chromosom sorry!

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