0:00:02 > 0:00:04- BELL RINGS - 'Oh, and, Jonathan? While I'm at the
0:00:04 > 0:00:07'opticians, can you water my plants,
0:00:07 > 0:00:11'mm, feed my fish...? Oh, and would you be a dear and do my laundry?'
0:00:11 > 0:00:13- HE SIGHS - I'll do my best,
0:00:13 > 0:00:15but there is only one of me, Ms Hucklebuck.
0:00:15 > 0:00:1974, 75, 76,
0:00:19 > 0:00:2177, 78...
0:00:21 > 0:00:24Whoa, Professor, even by your standards,
0:00:24 > 0:00:26this looks pretty bonkers.
0:00:26 > 0:00:28It's my new home-made 3-D printer.
0:00:28 > 0:00:31I'm using Mr Quackers here to make an army of rubber duckies.
0:00:31 > 0:00:32HE LAUGHS
0:00:32 > 0:00:35Wow, that's actually pretty impressive.
0:00:35 > 0:00:3887, 88, 89...
0:00:38 > 0:00:41- BELL RINGS - Going live in five, everyone.
0:00:41 > 0:00:44Ach, I'd better go and do the show.
0:00:57 > 0:00:59- ANNOUNCER:- 'Stand by!'
0:00:59 > 0:01:01Come on, everybody!
0:01:04 > 0:01:06- BOTH:- It's time for...
0:01:08 > 0:01:12Today we're asking, "Is every human being unique?"
0:01:12 > 0:01:14The human body is made up of over
0:01:14 > 0:01:1737 trillion tiny cells, and almost
0:01:17 > 0:01:21every one of them contains the set of instructions for making you.
0:01:21 > 0:01:25This instruction manual - or genetic code - is stored in our DNA,
0:01:25 > 0:01:28otherwise known as...
0:01:29 > 0:01:32Dioxy-pipa-nooky-hooky what now?
0:01:32 > 0:01:35Every living thing has DNA in its cells -
0:01:35 > 0:01:38humans, bacteria,
0:01:38 > 0:01:40apples, chimpanzees...
0:01:40 > 0:01:41Chimpanzees?
0:01:41 > 0:01:44Believe it or not, human and chimpanzee DNA
0:01:44 > 0:01:46is nearly 99% similar.
0:01:46 > 0:01:49'Yeah, for some reason that doesn't surprise me.'
0:01:49 > 0:01:51Ooh-ooh-ooh...
0:01:51 > 0:01:54In fact, all human DNA is almost
0:01:54 > 0:01:5699.9% similar, and it's only in
0:01:56 > 0:02:01the tiny 0.01% where our genetic differences occur.
0:02:03 > 0:02:04So there's your answer -
0:02:04 > 0:02:08our DNA is always similar, but never exactly the same.
0:02:08 > 0:02:12- Well, not quite - there is one exception.- Huh?
0:02:12 > 0:02:14Find out more after this break.
0:02:16 > 0:02:20- HE SIGHS - Maybe just a quick 40 winks.
0:02:20 > 0:02:22RUBBER DUCK QUACKS HE SNORES
0:02:22 > 0:02:24Oh, better get back to the duckies.
0:02:24 > 0:02:27Hup! 105, 106, 107...
0:02:27 > 0:02:30- Hello, McCork.- Oh, hey, Colin.
0:02:30 > 0:02:31108, 109...
0:02:31 > 0:02:35- Hello, McCork.- Yeah, I already said "hello", Colin.
0:02:35 > 0:02:37110, 111...
0:02:37 > 0:02:38Hello, McCork.
0:02:38 > 0:02:41Yeah, I heard you the first time, Colin.
0:02:41 > 0:02:42He's very friendly today.
0:02:42 > 0:02:44- BELL RINGS COLINS:- Positions, everyone!
0:02:44 > 0:02:46Crumpets!
0:02:51 > 0:02:54So tell us, Dr Knowles, are human beings unique?
0:02:54 > 0:02:56There is one exception, and that's
0:02:56 > 0:03:00in the case of identical twins.
0:03:00 > 0:03:04As we know, each egg or embryo has its own unique genetic code,
0:03:04 > 0:03:06but sometimes an egg splits in two.
0:03:06 > 0:03:10In this case, the resulting human beings are built using
0:03:10 > 0:03:12the exact same instruction manual.
0:03:12 > 0:03:15So are they the exact same in every way?
0:03:15 > 0:03:17No. Their DNA is the same,
0:03:17 > 0:03:19but as they each have different
0:03:19 > 0:03:22life experiences, they will develop their
0:03:22 > 0:03:25own completely unique traits and personalities.
0:03:27 > 0:03:29HE GRUNTS
0:03:30 > 0:03:32See you next time!
0:03:32 > 0:03:34And we're clear!
0:03:34 > 0:03:36- COLINS CHATTER - OK, Professor,
0:03:36 > 0:03:38you really need to start thinking
0:03:38 > 0:03:40these inventions through a bit more.
0:03:40 > 0:03:43Yeah, you're probably right. All the same, though,
0:03:43 > 0:03:45the place is going to be very clean.
0:03:45 > 0:03:46Oh, hello, Jonathan.
0:03:46 > 0:03:48How do you like my new spectac...?
0:03:48 > 0:03:50Ooh! Oh!
0:03:50 > 0:03:53I'm seeing double. No, no, no - double-double.
0:03:53 > 0:03:56No, no - double-double-triple-double.
0:03:56 > 0:03:58- SHE GROANS - Jonathan!
0:03:58 > 0:04:00- ALL:- The name's Colin, actually.
0:04:00 > 0:04:02COLINS BICKER
0:04:12 > 0:04:15It's over, done and dusted! Wa-hey!