Pedigrees
- Online Mendelian Inheritance in Man
- most traits are polygenic
- IS possible to have two blue eyed parents AND child who has brown eyes!
- Data sheet for inherited traits, to practice math, and probability of others in class having same exact combo as you for those 5 traits (14^5 = 537,824)
- can look at percentage based on class, how would it change if more traits were looked at - would be more unique, percentage would go down until 1:6billion
- water THEN detergent
- if swish before will lose cheek cells!
- swishing loosens cells
- salt
- detergent pulls apart cell membrane
- phosphates on side of DNA, DNA is - charge, DNA is 1nm wide, so to see you need to clump together, so salt dissolves into water, becomes Na+ and Cl-, Na+ attach to DNA and help them not to repel
- alcohol makes top layer since less dense. DNA is less soluble in alcohol. water is polar, DNA has charge, dissolves well. Alcohol is not polar, so DNA doesn't dissolve. As soon as DNA hits interface, comes out of solution after molecules collapse.
- agar agar powder - used to make almond "jello" in chinese restaurants
- when heating agar in microwave, need to heat, stir, heat stir so it doesn't boil over
- DON'T do it day of!
- need to do it before solidifies
- comb needs to not touch bottom - needs to be a well, not a hole
- check out gene connections if you are in San Mateo
- combs only use once when wet, if can dry out then should be ok
- can do crime scene! 4 suspects and one suspect, which matches?
- use dyes from pens, sodas, food coloring
Here's the picture!
Here's the picture!
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