Genetics: a practical demonstration

The other day I was on the phone and my eye fell on no less than six pairs of shoes on the floor, all huddled together having a little shoe party. They all belonged to the girls, who only have one pair of feet each, so it must have taken some time to assemble this little pile.

Bloody kids, I thought. Why can’t they ever put their shoes away?

Today I was in the same room, took an unwary step back and tripped over a shoe.

Bloody kids! I thought again, full of righteous anger. But then I had to laugh.

I looked down and realised the shoe was mine.

And that, ladies and gentlemen, is today’s demonstration of the awesome power of genetics.

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