Uniquely you: Why babies are all different

I was listening to last month’s edition of Naked Genetics presented by Kat Arney, a podcast under the excellent Naked Scientists umbrella.

An interesting question was asked: if half the chromosomes come from a person’s father and the other half from the mother, why aren’t siblings simply identical twins born at different times? In other words, what mechanism controls individuality?

Dr Phil Zegerman provided a nice answer (listen from 25:04):


The transcript can be found here (‘Why are children all so different?’).

You can also watch this lovely animation of the process Dr Zegerman describes – meiosis:

And this is what it actually looks like in a fruitfly:


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s