sex chromosomes

The 23rd Chromosome This month we’ve run a series of quizzes for the back-to-school season. Here’s are the answers to our third and final quiz. Congratulations to Toni K., who...

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...

Attention all students! We’re extending the Genetics 101 quiz through Sunday, September 16th to give everyone plenty of time to brush up on their genetics and earn a chance to...

Our Hero Gregor Mendel, an Austrian monk and biologist, worked out the pattern of inheritance of various traits. He showed that a “dominant” trait is one that always shows up...

It may be you’ve heard a rumor that males are on the brink of extinction. Whatever you may think of that prospect, the rumor is false. But over the past...