MicroRNAs are tiny RNA molecules (about 22 nucleotides long) that regulate gene expression after transcription. They can bind to mRNA molecules and either block them from being translated into protein...
**What it means:** Imagine your DNA is a library of instruction manuals (genes). A transcription factor is like a **foreman** who walks through the library, finds the right manual, and tells the worke...
**What it means:** KRAS and BRAF are genes that code for proteins in the **MAPK/ERK signaling pathway** — a cellular "messaging chain" that tells cells to grow, divide, and differentiate. In some case...