Mae rhywbeth rhyfedd yn digwydd yng ngweithdy Siôn Corn...
Mae gan bob corrach god 5-llythyren arbennig (sef eu genom) sydd wedi'i wneud o'r llythrennau A, C, T, a G. Mae'r cod hwn yn penderfynu sut olwg fydd arnynt - patrwm gwrido eu bochau, eu gwallt, lliw eu llygaid, eu haeliau, a hyd yn oed lliw eu croen.
Ond eleni, cafodd y codau eu cymysgu, ac mae angen eich help chi ar dîm Siôn Corn er mwyn datrys y sefyllfa.
Byddwch chi'n cwrdd â grŵp o gorachod, cewch wybod am ymddangosiad y corrach a beth yw ei god. Eich swydd chi yw darganfod:
Mae'n bos rhesymeg â thema Nadoligaidd. Defnyddiwch eich sgiliau ditectif, cymharwch y cliwiau, a dadgodio genom y corrach cyn i'r sled hedfan i ffwrdd!
Ydych chi'n barod i ddatrys Pos Pegwn y Gogledd?
Something strange is happening in Santa's workshop...
Every elf has a special 5-letter code (their genome) made from the letters A, C, T, and G. This code decides what they look like - their blush pattern, hair, eye colour, eyebrows, and even their skin tone!
But this year, the codes got mixed up, and Santa's team needs your help to sort them out.
You'll meet a group of elves with known codes and clear traits. Your job is to figure out:
It's a logic puzzle with a festive twist. Use your detective skills, compare clues, and decode the elf's genome before the sleigh takes off!
Ready to become a North Pole Codebreaker?
We have six examples of the new codes, and the resultant elves displayed below.
Using this information, can you determine the code for this elf?

Below are the five features that change:
You will first need to work out what each part of the code controls and then find the matching traits/genome for the mystery elf.
Start by looking at the elves with genomes that share only one of the code letters (ie. AATAT and CCAGT or CCCGG and TAGGA).
There is one trait that the mystery elf has which is not shared with any others - this means one part of the genome is unique.
You need to identify the five traits that change and all four possible versions (one for each of the letters of A, C, G. and T).
Below are the five features that change:
The elves with the genomes of AATAT and CCAGT - as highlighted, share one section of code. Therefore, they must have one trait in common - their blush pattern/facial markings. This tells us that the fifth letter of the code controls this trait.
The elves with the genomes of CCCGG and TAGGA - again, share one section of code. This tells us that the fourth letter determines the colour of their eyebrows.
To calculate what the third letter controls we can look at the elves with the genomes of CCCGG and TGCAA. The only trait they share is hair colour.
By looking at the elves with genomes of TAGGA and TGCAA we can identify which trait the first letter controls. They may share two sections of code, but we already know that the fifth letter controls the blush pattern/face markings.
This means the second letter must control the fifth listed trait.
Now, you have identified which trait each section of the code controls.
So, to write the genome for the mystery elf we need to match the code sections with other elves that share the same trait.
However, the mystery elf is the only one with black eyebrows - there is no-one to match it against. Instead, it must have a letter different to all the rest.