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Biology Honors
Non-Mendelian Genetics & Protein Synthesis
Study Guide
Genetics
vocabulary
codominant
incomplete dominance
linked genes
multiple alleles
polygenic traits
pleiotropy
X-linked
Y-linked
sex-linked
sex-influenced
sex-limited
nondisjunction
monosomy
trisomy
autosome
sex chromosome
duplication
inversion
translocation
deletion
point mutation
frame shift mutation
1. Draw a Punnett square for a trait that has complete dominance showing a cross between two
heterozygous parents.
trait:
genotypes:
genotype ratio:
phenotypes:
phenotype ratio:
2. Draw a Punnett square for a trait that has incomplete dominance showing a cross between two
heterozygous parents.
trait:
genotypes:
genotype ratio:
phenotypes:
phenotype ratio:
3. Draw a Punnett square for a trait that has codominance showing a cross between two
heterozygous parents.
trait:
genotypes:
genotype ratio:
phenotypes:
phenotype ratio:
4. Explain the difference between sex-linked, sex-limited and sex-influenced traits.
5. Is it possible for a man with type A blood to have a child with type B blood? Explain.
6. Give an example of:
trisomy
incomplete dominance
recessive trait
sex-linked trait
sex-influenced trait
pleiotropy
monosomy
codominance
polygenic trait
multiple alleles
sex-limited trait
point mutation
dominant trait
7. Give an example of a trait / disorder caused by:
monosomy
point mutation
trisomy
recessive allele
dominant allele
sex-linked allele
8. Give an example of a human trait that exhibits:
pleiotropy
polygenic inheritance
multiple alleles
codominance
sex limited
sex influenced
9. Most of the genetic disorders discussed in class were recessive or spontaneous. Why are there
so few that are autosomal dominant?
Protien Synthesis
Vocabulary
transcription
translation
elongation
codon
anticodon
Explain what each type of RNA does:
mRNA
rRNA
tRNA
Translate the following DNA fragment:
TACAACGTACCTAGAACT
Use the codon table to build the corresponding protein chain.