Codominance

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Storyboard Description

mostly about the dominance law

Storyboard Text

  • SHH!!!
  • Sorry!
  • I fell asleep at bio class, PLEASE explain incomplete dominance. I don't understand a thing!
  • I'M SORRY, I'LL GET YOU COFFEE FOR LUNCH, PLEASEEEEE?
  • Who told you to SLEEP in class, huh?
  • Fine! Get me turkey sandwich too, see you at dorm
  • Back at dorm...
  • Sure, sure. That was explained a few days ago, and I WAS NOT asleep at that time
  • You do know some things about the basic Mendelian inheritance and crossing, right?
  • Okay... This shouldn't confuse you that much then.
  • Dragons snapping?
  • So, incomplete dominance is a condition where neither allele for a gene completely conceals. Easiest example is the colour of snapdragons. Say one parent is red with C^R and the other is white with C^W. They're both homozygous by the way.
  • I can hear your brain going places. Snapdragons. Flowers. Focus.
  • This is all from the 2010 McGraw-Hill Ryerson Biology 11 textbook, by the way.
  • If these two are crossed, the F1 generation will all be pink, a mix of red and white, because neither are dominant over the other. Get it?
  • Okay, okay, I'm pretty sure I get it. So, this is what happens when incomplete dominance occurs?
  • Okay...
  • So it's like, being dominant, but half?
  • Exactly.
  • That's about codominance, a situation where both alleles are fully shown in the offspring. Don't mix them up. Incomplete is 50-50, co- is both.
  • I remember seeing 2-COLOURED-COWS in the teacher's powerpoint though...
  • This girl...
  • HAVE I JUST MASTERED INCOMPLETE AND CODOMINANCE???
  • WE HAVE TO CELEBRATE THIS!!! TURKEY SANDWICH?!
  • Sit down and read the textbook. Do some of the que-
  • ugh..
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