What is one difference between gene regulation in prokaryotes and eukaryotes?(1 point)
Responses
All eukaryotes use operons to organize their genes while prokaryotes do not.
All eukaryotes use operons to organize their genes while prokaryotes do not.
Eukaryotes transcribe genes in response to environmental stimuli while prokaryotes transcribe genes randomly.
Eukaryotes transcribe genes in response to environmental stimuli while prokaryotes transcribe genes randomly.
Prokaryotes do not store their genes in a nucleus like eukaryotes do.
Prokaryotes do not store their genes in a nucleus like eukaryotes do.
Prokaryotes remove exons from mRNA before translation while eukaryotes translate the entire sequence of mRNA.
8 answers
Prokaryotes remove exons from mRNA before translation while eukaryotes translate the entire sequence of mRNA.
What would happen if a cell transcribed and translated a gene’s intron by mistake?(1 point)
Responses
The DNA would remain the same as before.
The DNA would remain the same as before.
The intron would begin to duplicate itself.
The intron would begin to duplicate itself.
Errors in the protein folding would be repaired.
Errors in the protein folding would be repaired.
Additional amino acids would be inserted into the chain.
Responses
The DNA would remain the same as before.
The DNA would remain the same as before.
The intron would begin to duplicate itself.
The intron would begin to duplicate itself.
Errors in the protein folding would be repaired.
Errors in the protein folding would be repaired.
Additional amino acids would be inserted into the chain.
Additional amino acids would be inserted into the chain.
In prokaryotic cells, repressor proteins bind to a section of DNA called a/an(1 point)
Responses
repressor.
repressor.
operator.
operator.
promoter.
promoter.
chromatin.
Responses
repressor.
repressor.
operator.
operator.
promoter.
promoter.
chromatin.
operator.
The removal of sections of RNA, called introns, occur at which regulation step in eukaryotic cells?(1 point)
Responses
post-translation
post-translation
chromatin remodeling
chromatin remodeling
mRNA life span
mRNA life span
RNA processing
Responses
post-translation
post-translation
chromatin remodeling
chromatin remodeling
mRNA life span
mRNA life span
RNA processing
RNA processing
Hox genes are regulatory genes in multicellular
animals that code for transcription factors that
determine the basic body plan in a developing
embryo. They act as switches that turn other genes
on and off. Scientists have found that a mutation in a
fruit fly hox gene produces flies with legs instead of
antennae sticking out of their heads. Another hox
gene mutation results in fruit flies with two pairs of
wings instead of one pair. Hox genes affect body
plans by controlling the expression of many other
genes.
Many multicellular animals have the same hox genes.
Which statement is evidence for this claim?
(1 point)
The body plans of complex animals
typically have a large number of
mutations.
There is a wide variety of body plans in
complex animals.
The body plans of complex animals
are very similar to one another.
The body plans of complex animals
change over generations.
animals that code for transcription factors that
determine the basic body plan in a developing
embryo. They act as switches that turn other genes
on and off. Scientists have found that a mutation in a
fruit fly hox gene produces flies with legs instead of
antennae sticking out of their heads. Another hox
gene mutation results in fruit flies with two pairs of
wings instead of one pair. Hox genes affect body
plans by controlling the expression of many other
genes.
Many multicellular animals have the same hox genes.
Which statement is evidence for this claim?
(1 point)
The body plans of complex animals
typically have a large number of
mutations.
There is a wide variety of body plans in
complex animals.
The body plans of complex animals
are very similar to one another.
The body plans of complex animals
change over generations.
13 answers