How Does Selective Gene Expression Create Diverse Cell Types?

AI Thread Summary
Selective gene expression allows multicellular eukaryotes to develop diverse cell types by activating specific genes while silencing others, leading to specialized functions. Eukaryotic gene expression is controlled through complex mechanisms, including transcription factors and epigenetic modifications, which differ significantly from the simpler regulatory processes in prokaryotes. In prokaryotes, gene expression is primarily regulated at the transcriptional level, often through operons. The discussion emphasizes the importance of understanding these regulatory mechanisms to grasp how different cell types arise. For detailed explanations, users are directed to educational resources that provide visual aids on gene expression control.
LiL wEi wEi
Messages
1
Reaction score
0
Question on Gene expression!?

Explain how selective gene expression yields a variety of cell types in multicellular eukaryotes.

Explain how eukaryotic gene expression is controlled, and compare it to gene control in prokaryotes.


can anibody tell me the answers??! thanks :shy:
 
Physics news on Phys.org
Go on to this site
http://science.nhmccd.edu/biol/bio1int.htm

Click on gene expression
scroll down to
Control of Gene expression McGraw-Hill
The animations explan it all really well
 
Last edited by a moderator:
Thread 'Confusion regarding a chemical kinetics problem'
TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
I don't get how to argue it. i can prove: evolution is the ability to adapt, whether it's progression or regression from some point of view, so if evolution is not constant then animal generations couldn`t stay alive for a big amount of time because when climate is changing this generations die. but they dont. so evolution is constant. but its not an argument, right? how to fing arguments when i only prove it.. analytically, i guess it called that (this is indirectly related to biology, im...
Back
Top