How do genes regulate cell abilities?

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In summary, genes are sequences of DNA that determine the sequences of amino acids in proteins, which in turn determine the protein's shape and function. These proteins can serve various roles in a cell, such as enzymes, transcription factors, or receptors. They are produced through the process of transcription and translation, and their levels can vary depending on the needs of a particular cell. It is not the genes themselves that dictate a cell's abilities, but rather the transcription of certain genes that limit its potential. Other factors, such as surrounding tissue and location, can also influence a cell's transcription activities and functions.
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Mattius_
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What chemical reactions take place when genes "tell" cells what to do? I'll have more specific questions later but this will be a decent start.
 
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  • #2
A gene is a sequence of DNA, a protein is a sequence of amino acids. The sequence of the first determines the sequence of the second.

The sequence of amino acids determines the protein's shape and function. Some are colors in your iris, some are hormones, some are enzymes which favor certain reactions.
 
  • #3
Genes are like a book of words, each word has a different meaning. But each word need to be processed in order to become active.

Genes are read by certain cellular machineries, this process is called transcription: DNA is read and an mRNA copy (this is a messenger molecule) is made. Then after transcription, translation takes place. This is the process where the mRNA is translated into a protein.

Proteins have very specific functions in a cell, they can be enzymes, transcription factors, receptors, etc.
 
  • #4
and these proteins are the actual muscle that make commands into actual transformations/adaptations? Or are they another form of a messenger?
 
  • #5
Mattius_ said:
and these proteins are the actual muscle that make commands into actual transformations/adaptations? Or are they another form of a messenger?

It stops there. Proteins help make up most of the human body
Once you go protein you can't go back. :wink:
 
  • #6
There's also differential transcription and translation in some cells versus others. For example, the lens cell in the eye contains thousands of crystallin proteins which serve to focus light (I think). In the growing lens cells, there would be very high amounts of transcription of the crystallin message, and translation of the protein.

In contrast, blood cells would not have transcription and translation of crystallin, but instead have transcription and translation of haemoglobin.

In my opinion, it is not genes that "tell" what cells can do. Instead, it is the transcription of certain genes that limit the abilities of the cell. There are many things that determine what a cell's ability should be, and should include, for example inducing factors from the surrounding connective tissue. Theoretically, if a cell were to be located in some other place of the body, it would change its transcription activities accordingly to what its new destined function is.

K.
 

What are genes?

Genes are segments of DNA that contain instructions for building and maintaining an organism.

How do genes work?

Genes work by encoding proteins that carry out specific functions in the body. They are turned on or off by signals from the environment or other genes, and are responsible for traits such as eye color, height, and susceptibility to diseases.

How do genes influence behavior?

Genes can influence behavior by affecting the development of the brain, which in turn can impact an individual's personality and cognitive abilities. However, environmental factors also play a significant role in shaping behavior.

What is gene expression?

Gene expression is the process by which the information in a gene is used to create a functional product, such as a protein. This process involves the transcription of DNA into RNA, and the translation of RNA into proteins.

How do mutations in genes occur?

Mutations in genes can occur spontaneously during DNA replication, or they can be caused by external factors such as radiation or chemicals. These mutations can result in changes to the genetic code and may lead to genetic disorders or variations in traits.

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