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Heredity Study Guide
Inheritance:
1. What did Gregor Mendel’s three principles state?
2. An individual who cannot roll their tongue crosses with an individual homozygous for tongue
rolling.
R= dominant rolling tongue gene
r= recessive, cannot roll tongue gene
Genotype = ______________________
Phenotype = ______________________
Complex traits notes:
3. Define and provide an example:
a. Incomplete dominanceb. Co-dominancec. Multiple allelesd. Polygenic-
4. Blood type:
a. How many alleles determine blood type? ____________
b. Define allele-
c. A female is heterozygous blood type A and the male is
homozygous blood type B. Could their children be blood
type A like their mom?
Genotype = ______________________
Phenotype = ______________________
X-linked traits notes:
5. X-linked recessive:
a. What is the genotype for a female carrier?
b. What is the genotype for a male carrier?
__________
__________
c. Male patterned baldness is an X-linked recessive trait. The mother is a carrier and the
father is not bald. Complete the Punnett square
d. What are the chances they will have a child (male or
female) with male patterned baldness?
e. Draw out a pedigree for this family, properly shading the
individuals.