Dominance - how it works?

Genetics as it applies to evolution, molecular biology, and medical aspects.

Moderators: Leonid, amiradm, BioTeam

Post Reply
Mar_Garina
Garter
Garter
Posts: 2
Joined: Mon May 29, 2006 7:28 pm

Dominance - how it works?

Post by Mar_Garina » Mon May 29, 2006 7:35 pm

Hi,

Lots of studying about Mendel's dominant-recessive discovery, but I don't get how it really works. what is the mechanism that makes "Rr" create only "R" protein?

How does the diploid cell "choose" which homologous chromosome to transcript into mRNA?

or do I miss anything? :)

thanks!

- Oren

Ultrashogun
Coral
Coral
Posts: 149
Joined: Wed Jan 04, 2006 4:48 am

Post by Ultrashogun » Mon May 29, 2006 10:28 pm

The recessive allel is often some kind of defective version of the gene and forms a polipedtide that just doesnt work or that actually inhibits the functional version.

Mar_Garina
Garter
Garter
Posts: 2
Joined: Mon May 29, 2006 7:28 pm

Post by Mar_Garina » Tue May 30, 2006 5:22 am

Ohh. I see.
So choosing which homologous chromosome to transcript the mRNA from is just random?

Ultrashogun
Coral
Coral
Posts: 149
Joined: Wed Jan 04, 2006 4:48 am

Post by Ultrashogun » Tue May 30, 2006 7:58 am

No they both transcribe and translate, the one just makes a protein thats doesnt work, is defective or inhibits the working one.

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest