l. Genotype
m. Monohybrids
n. Dihybrids
o. Complete dominance
p. Incomplete dominance
q. Codominance (give an example)
r. Pleiotropy
s. Pedigree analysis
t. Consanguineous mating
81. What were the 2 fundamental principles of heredity that Mendel found?
82. What is the law of segregation? How does it work?
83. What 4 concepts make up Mendel's model? Explain them.
84. What is the law of independent assortment? How does it work? What does it apply to?
85. What are the 3 levels we can examine phenotype at? Give an example for each one
contrasting the other two.
86. What 2 situations are 2 or more genes involved in determining a particular phenotype?
Define the two situations and give as many examples as you can think of.
87. Describe key aspects of the behavior of recessive alleles disorders
a. How are homozygotes affected vs heterozygotes?
b. What happens if the disease is lethal?
c. How does incest affect recessive alleles
88. Do the same for dominant alleles disorders
89. What does simple mendelian disorders refer to?
90. What does a multifactorial basis refer to?
Chromosomes and its Basis of Inheritance
91. What does the chromosome theory of inheritance entail?
92. Why did Thomas Hunt Morgan choose to work with fruit flies?
93. Why do X and Y chromosomes behave like homologous chromosomes, even though
they don’t technically match?
94. What does the SRY gene do? Which chromosome is it on?
95. What is a sex linked gene?
96. How does a recessive sex linked gene affect a male vs a female
97. What is hemizygous? Who does it relate to? Why does this happen?
98. Why do men have more x linked disorders than women?
99. What is meant by x inactivation in females?
100. How does x inactivation relate to a barr body? First define what a barr body is.
101. Where does the barr body stay when not in use
102. When does the barr body remain inactive and when is it active?
103. Females are a mosaic of the x chromosomes from their parents. How does this
relate to x inactivation?
