AP Biology Discussion Notes
Wednesday 04/01/2015
Goals for the day
• Be able to use a chi square analysis to analyze
whether actual data is close to our predictions
(within the probability that we expect)
• Be able to predict the probability of an event
(getting particular offspring or getting a
particular gamete)
Question of the day 4/01
• Cross a Jackrabbit
heterozygous for antlers and
brown fur with a jackrabbit
who has no antlers and
white fur. Write the
genotype & possible
gametes of each parent.
Then give the Punnett
square using only the
number of boxes that the
parents have DIFFERENT
gametes.
Antlers is DOMINANT_ to no antlers.
Brown fur is DOMINANT __ to white.
Question of the day 4/01
• Save yourself some time &
energy!
– You don’t have to make a
4x4 punnett square if 1
parent doesn’t have 4
different gametes.
– Only use as many
rows/columns as you have
numbers of DIFFERENT
gametes.
Antlers is DOMINANT_ to no antlers.
Brown fur is DOMINANT __ to white.
Fly lab
Assumptions:
– Wild type (+) – Assume dominance
– ordered flies are Purebred
– Traits are Autosomal
– Basic & Complete Dominance
– All traits are Non-lethal
– Mendel’s Laws are at work
• Law of segregation
• Law of independent assortment
Fly Lab work order
• Complete the Part 1 sheet, then bring up your
completed Part 1 lab to get the experimental
cross challenge. 
• Complete the Experimental cross questions
• Study for quiz tomorrow