Find two coins: one nickel and one penny to avoid confusion. the nickel and penny will represent the parents. the head and tail of each coin will represent a single allele (so each parent has two alleles). with these coins, conduct the following trials:

test 1: aa x aa (heads and tails of each coin are a)

test 2: aa x aa (heads and tails of each coin are a)

test 3: aa x aa (head and tail of the nickel are a; head and tail of the penny are a)

test 4: aa x aa (head is dominant and tail is recessive on both coins)

test 5: aa x aa (head is dominant and tail is recessive on the nickel; head and tail on the penny are recessive).

flip each coin 20 times for each test and record the results.

determine the f1  frequencies and ratios based on the results.