Question at position 14 A GFP reporter is constructed to look at gene regulation of a gene thought to be expressed during early embryo development. The expression pattern (when during development) of GFP is most likely reporting on what type of gene regulation?RNA editingprotein degradationTranscription InitiationProtein structureequally everything after and including protein translationTranslational initiationmRNA degradationequally everything before translationClear my selection单项选择题
A
RNA editing
B
protein degradation
C
Transcription Initiation
D
Protein structure
E
equally everything after and including protein translation
F
Translational initiation
G
mRNA degradation
H
equally everything before translation

Question

Question at position 14 A GFP reporter is constructed to look at gene regulation of a gene thought to be expressed during early embryo development. The expression pattern (when during development) of GFP is most likely reporting on what type of gene regulation?RNA editingprotein degradationTranscription InitiationProtein structureequally everything after and including protein translationTranslational initiationmRNA degradationequally everything before translationClear my selection单项选择题

A

RNA editing

B

protein degradation

C

Transcription Initiation

D

Protein structure

E

equally everything after and including protein translation

F

Translational initiation

G

mRNA degradation

H

equally everything before translation

BlackTom AI · Accepted Answer

The question asks which type of gene regulation is most likely being reported by GFP expression during early embryo development. 
Option 1: RNA editing. This process changes nucleotides after transcription, affecting RNA sequences, but the timing of GFP expression in development is more closely tied to when a transcript is produced rather than modifying the RNA after it's made, so this is unlikely to be what the reporter is reflecting.
Option 2: protein degradation. If GFP were reported to indicate when a protein is stabilized or degraded, the reporter would primarily reveal post-translational dynamics rather than when transcription occurs during development; GFP fluorescence would depend on protein stability rather than transcription onset.
Option 3: Transcription Initiation. This directly concerns when transcription begins for the gene of interest. A GFP reporter driven by the gene’s promoter would light up as soon as transcription is initiated in the developing embryo, making the observed GFP pattern a proxy for transcriptional regulation timing. This aligns with studying early embryo gene expression control.
Option 4: Protein structure. Structural aspects of the encoded protein do not govern the timing of GFP signal onset in a reporter assay; expression timing is not determined by how the eventual protein folds, but by when transcription happens.
Option 5: equally everything after and including protein translation. This option would imply the reporter reports on everything from translation onward, which would blur the specific timing of transcription initiation and is not the common readout for early developmental regulation using a promoter-driven GFP reporter.
Option 6: Translational initiation. While translation onset can influence when fluorescence appears, reporter constructs typically place GFP under the control of the gene’s promoter to monitor transcriptional activity; post-transcriptional control can modulate signal but is not the primary readout for embryonic transcription timing.
Option 7: mRNA degradation. Degradation rates affect mRNA abundance after transcription, but a transcription-focused reporter aimed at developmental timing is more consistently read as a proxy for when transcription begins rather than how fast the mRNA decays.
Option 8: equally everything before translation. This would imply the entire pre-translation regulatory window (e.g., transcription and processing) is being reported, which is not the standard interpretation for a GFP reporter tied to transcriptional control in development.
In summary, the GFP reporter’s timing in early embryos most directly reflects when transcription initiates for the gene of interest, making Transcription Initiation the best-supported choice among the options provided.

类似问题

T/F Transcription begins at the Start codon.

In both eukaryotes and prokaryotes RNA polymerase recognizes the transcriptional start site by

The role of sigma factor during bacterial transcription is to cause

Question at position 19 In eukaryotes, RNA polymerase binds to a _ called the region.protein: transcriptsequence of DNA;transcriptNone of the above, eukaryotes do not use RNA polymerasesequence of DNA; promoterprotein; promoterClear my selection

The nucleotide sequence on a DNA molecule that is involved in the initiation of transcription is called the

In the process of eukaryotic gene expression, the formation of the Transcription Initiation Complex is a critical regulatory step. Which of the following components is correctly matched with its role in this complex at the promoter?

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单