I can… analyze punnett squares!
Warm up: What percentage of
heterozygous offspring would there
be from a parent that is homozygous
dominant and a parent that is
homozygous recessive?
Make a punnett square!
Harry has dark hair like his father, but his mom
had red hair. Using the genotypes of dd (red
hair), Dd (dark/brown hair), DD (dark/brown
hair), what possible genotypes does each of the
Potters have?
• Harry marries Ginny who has red hair. What
are possible genotypes of their children’s hair
colors?
• Try a CODOMINANCE scenario:
A purple flower is crossed with a white flower. In
this species, white and purple are CODOMINANT
traits. Show their punnett square.
What are the
phenotypes of the
offspring?
What are the
percentage of the
offspring will be
homozygous?
• Try an INCOMPLETE DOMINANCE scenario: