Hand in take home quiz before the bell rings please

1
Class Topics
Title Biology 2/14/08
Objectives

• To assess knowledge of Mendelian genetics.

• Hand in take home quiz before the bell rings
  please
• Review Chapter 9 Quiz 1/Chapter 8 Test
• Complete Investigating Inherited Traits lab
• Never make a calculation until you know the
  answer make an estimate before every
  calculation, try a simple physical argument
  (symmetry! Invariance! Conservation!) before
  every derivation, guess the answer to every
  puzzle. Courage no one else needs to know what
  the guess is. Therefore make it quickly, by
  instinct. A right guess reinforces this
  instinct. A wrong guess brings the refreshment
  of surprise. In either case life as a spacetime
  expert, however long, is more fun!
• Wheeler, John A. and Edwin F. Taylor. Spacetime
  Physics, Freeman,1966. Page 60.

Sunday, November 15, 2009 422 AM
2
Class Assignments
By When
What

• Quiz/worksheet 2/14/08
• Investigating Inherited Traits 2/15/08
• Probabitity Problems 2/15/08
• Chapter 9 Test 2/19/08
• Due this class period
• Due next class period
• Due in the future

3
Complete the lab
From http//www.geocities.com/TheTropics/Resort/4
986/gaston.gif
4
Dihybrid cross

• Crossing two traits
• 16 box Punnett square
• Animation
• Independent Assortment

5
Results

• F1 - Pheno
• Green/Tall
• Green/short
• yellow/Tall
• yellow/short
• What if there were 961 of these seeds planted?
  Approximately, how many of each type would there
  be?

6
Probability

• Likelihood that an event will occur
• Expressed as a fraction, ratio, decimal, or
  percentage (well use fractions)
• Probability of a coin landing as heads?
• 11, ½, 0.50, 50
• Probability a heterozygote will produce a
  dominant allele in its gamete?

7
Probability

• Product rule
• Toss a coin probability of tails?
• ½
• Toss the same coin again probability of
  tails?
• ½
• Probability of 2 tails
• ½ x ½ ¼

8
Probability

• Male
• 1/2
• Female
• 1/2
• Family with having a boy, a girl, a boy, and a
  girl in that order.