Time To Read
Date Last Modified
OVERVIEW
PART 1
PART 2
PART 3
PART 4
PART 5
PART 6
PART 7
Quiz
CHART CLUE
This is the molecular climax – where genetics finally explains everything. The MEFV gene is transcribed and translated into misfolded pyrin; the mutationA change in DNA sequence that can affect gene function. existed once, in the zygote, and mitosis copied that single typo into every cell Stina ever made. The reveal: a clinician finally recognizes the periodic-fever pattern and orders the MEFV panel.
The Story
The master recipe stays safe inside the nucleusThe control center of the cell that contains DNA and directs cellular activities.; a disposable working copy – mRNA – carries the message out to the ribosomesSmall structures responsible for protein synthesis, either free-floating or attached to the rough ER. When MEFV is transcribed, the typo is copied faithfully into that message too. Only the genes a cell needs get transcribed, which is why different cellsThe basic structural and functional units of life. do different jobs from the same DNA.
From Stina’s chart: “It was written in me the whole time.” That’s how she describes it now — the message there since before she could remember, copied out, attack after attack.
Compare Stina’s uninfected appendixA small, finger-like pouch attached to the cecum, thought to play a role in immune function. to an infected appendix.
Activity:
Activity:
The message reaches the ribosome. One wrong codon is about to become one wrong amino acidThe building blocks of proteins, consisting of an amino group, carboxyl group, and side chain..
List of terms
- mutation
- nucleus
- ribosomes
- cells
- appendix
- amino acid