BIO 93 Final Exam Questions and Answers
with Verified Solutions | Latest Updated 2026
What is an example of incomplete A red and white snapdragon making a pink
dominance? offspring
What is an example of co- Blood cells.
dominance?
What is Pleiotropy? When a gene affects more than
one phenotypic character.
What is the norm of reaction? The range of phenotypic possibilities
What are some example of Skin color and height
polygenic inheritance?
Norms of reactions are broadest polygenic
for
_____________ characters
Genetic traits in humans can be Family pedigrees
tracked through what?
What is loosely packed chromatin Euchromatin
called?
, What happens in histone Acetyl groups are attached to histone tails
acetylation?
What is the purpose of histone To loosen chromatin structure to promote
acetylation? initiation
in transcription.
In what gender is Igf2 expressed The maternal chromosome
in?
What does it mean for a protein to Ubiquitin attached to the protein and takes
be ubiquitinated? it to a
proteasome that degrades the protein.
What does a repressor do? Block transcription of a gene
What does an activator do? Stimulate the transcription of a gene
What binds to the enhancers? The activators
What are some ways that mRNA shortening of poly A tail, removal of cap,
can nucleases
be degraded? chew up mRNA
What are histones responsible for? 1st level of DNA packing in chromatin
What is a region of highly Heterochromatin
condensed
chromatin called?
with Verified Solutions | Latest Updated 2026
What is an example of incomplete A red and white snapdragon making a pink
dominance? offspring
What is an example of co- Blood cells.
dominance?
What is Pleiotropy? When a gene affects more than
one phenotypic character.
What is the norm of reaction? The range of phenotypic possibilities
What are some example of Skin color and height
polygenic inheritance?
Norms of reactions are broadest polygenic
for
_____________ characters
Genetic traits in humans can be Family pedigrees
tracked through what?
What is loosely packed chromatin Euchromatin
called?
, What happens in histone Acetyl groups are attached to histone tails
acetylation?
What is the purpose of histone To loosen chromatin structure to promote
acetylation? initiation
in transcription.
In what gender is Igf2 expressed The maternal chromosome
in?
What does it mean for a protein to Ubiquitin attached to the protein and takes
be ubiquitinated? it to a
proteasome that degrades the protein.
What does a repressor do? Block transcription of a gene
What does an activator do? Stimulate the transcription of a gene
What binds to the enhancers? The activators
What are some ways that mRNA shortening of poly A tail, removal of cap,
can nucleases
be degraded? chew up mRNA
What are histones responsible for? 1st level of DNA packing in chromatin
What is a region of highly Heterochromatin
condensed
chromatin called?
