Saturday, 3 August 2013

Chilling Out and Extracting DNA!

 Quiet times here this week... we've been clearing the house out ready for renovating the kitchen over the next few months, so while I've buzzed about doing that the children have had a pretty chilled week playing together, watching videos, discovering forgotten toys I've unearthed, and giving me directions as to how they want their rooms organised :)

Amongst all that we had a brilliant afternoon watching Bianco by the Nofit State Circus. The boys loved this sculpture in the park on the way, which we'd never seen despite having been there an uncountable number of times. They chatted about what they thought it meant, and then Sprout read the reflection in the water of another one that was hidden by trees...


Squidge and I spent an afternoon doing a big low budget batch cook, including lots of recipes from A Girl Called Jack, and some of our tried and tested ones like this two ingredient pizza (Squidge: "I like pepperoni. See, eyes, mouth, cheeks, it's a baddy!)


We had a delivery midweek, and Sprout wanted the challenge of escaping from a cardboard box, which he achieved pretty quickly...


... and then Moppet spent much of the rest of the week sitting in it :)


Moppet has spent a lot of time with her current favourite activity, the metal board and magnets...


... and when Sprout noticed the geomag he made a DNA double helix...


After some late night discussion he initiated about cloning and the acidic properties of DNA (Why doesn't it eat through us from the inside?), we decided to extract our own DNA. All you need is salt water, washing up liquid, and cold vodka (or other strong alcohol)...


First, mix about a teaspoonful of washing up liquid with about three times that amount of water. Then swill your mouth thoroughly with the salt water to dislodge some cheek cells. Spit the water into the detergent mixture. Stir it all for a few minutes to give the cells chance to rupture. Then slowly pour some very cold vodka down the side of the glass, and it will sink to the bottom. Depending on how well it's worked, you should see some very fine white strands floating near where the two liquids meet, or even whole clumps of white strands. This is your DNA! Sprout was so excited to see it, we're going to do it again today and look at it under the microscope!






1 comment:

  1. We did the extracting your own DNA a while back, about a year or so ago. It is really cool. :)

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