Otago HSFY chat - archive

[Proshot]

[OFFTOPIC] Pleasure And congratulations on your 50!!! Welcome to the chatbox!!! Scroll down [/OFFTOPIC]

Oh wow I thought there was something wrong with my browser when the chat box came up haha, it's so different... thanks again voldemort

 

[Proshot]

Sorry for the questions guys but last one (at least for cels ) With the questions on making genetic symbols to explain a genetic explanation of genotypes, would it be okay to just use vg+,vg,b+,b x vg,vg,b,b as shown on lecture 24, page 12?

 

[SeeKay]

I thought we could assign any letters as long as we show what each symbolize?

 

[frootloop]

I thought we could assign any letters as long as we show what each symbolize?

Yep. Unless they specifically tell you what letters to use, just use whatever you like, and tell the marker which each symbolises. Probably better to use reasonably logical letters though, for example, if the dominant phenotype is 'purple', and the recessive is 'white', then it follows that the alleles would be 'P' (purple) and 'p' (white).

 

[toilet]

Yep. Unless they specifically tell you what letters to use, just use whatever you like, and tell the marker which each symbolises. Probably better to use reasonably logical letters though, for example, if the dominant phenotype is 'purple', and the recessive is 'white', then it follows that the alleles would be 'P' (purple) and 'p' (white).

[MENTION=13401]Proshot[/MENTION] the example you gave with the lecture slide says that all the vg and vg+ etc are convention for drosophila, hmm but i'll agree with frootloop as im used to using Capitals and lowercase for denoting the different alleles

 

[Proshot]

Oh right cool, easy 4 marks then

 

[marsupial]

Good luck for CELS guys! Kia Kaha, may the force be with you!

 

[Ben]

Good luck for CELS guys! Kia Kaha, may the force be with you!

[offtopic]Maori jedis are the best kind.[/offtopic]

 

[marsupial]

[offtopic]Maori jedis are the best kind.[/offtopic]

[offtopic]Haha one of the physics teachers at my school said this all the time before a test and it was hilarious!! Oops, if anyone from my school reads this then my identity will be revealed. Awkward[/offtopic]

 

[Proshot]

Hey guys, can embryonic stem cells give rise to all structures of an embryo? and are they found in the adult bone?

 

[toilet]

Um well embryonic stem cells are not totipotent as they can't give rophectoderm cells, so i guess they can't give rise to ALL the structure of the embryo, though then again i could be dead wrong.

And if they're adult bones i assume they would be Adult stem cells which are just undifferentiated cells which are different to embryonic stem cells.

Hope it helps :S

Note to self: review that lecture now

 

[Sam]

It depends when they're "harvested". In the 8 cell phase of the embryo they are totipotent (can give rise to everything including trophectoderm cells), however, once they are in the blastocyst phase the inner cell mass (the cells which don't form the trophectoderm wall) they are pluripotent - which means they can become any other type of cell EXCEPT a trophectoderm cell.

I believe adult stems from bone etc have a predetermination as to their final function and morphology, however the idea is that these cells could maybe be returned to a totipotent phase.

 

[toilet]

It depends when they're "harvested". In the 8 cell phase of the embryo they are totipotent (can give rise to everything including trophectoderm cells), however, once they are in the blastocyst phase the inner cell mass (the cells which don't form the trophectoderm wall) they are pluripotent - which means they can become any other type of cell EXCEPT a trophectoderm cell.

I believe adult stems from bone etc have a predetermination as to their final function and morphology, however the idea is that these cells could maybe be returned to a totipotent phase.

[MENTION=14020]lulwut[/MENTION] you so wise great master lulwut
also i think proshot is offline =(

 

[Sam]

@lulwut you so wise great master lulwut
also i think proshot is offline =(

Meh, might help other people even if s/he is offline

 

[Proshot]

Thanks guys just a question on the MCQ on last years cels exam which me and a mate were disputing

Btw lulwut, It's a He

 

[toilet]

[MENTION=14020]lulwut[/MENTION] it clearly says that on his gender thingo...
[MENTION=14020]lulwut[/MENTION] are you a he?

ALRIGHT ALL THE S/HE's ON MSO DOING CELS TOMORROW, GOOD LUCK!!!!

 

[Sam]

@lulwut are you a he?

You already know what I am babe

 

[Voldemort]

Hey guys, good luck for CELS tomorrow. Its the kind of exam in which if you know your stuff, you will be able to ace the exam really well.
Potential GPA booster! Go hard guys!

 

[Sam]

Goodluck ladies and gents and toilets!

 

[Swaghilli]

I feel as though after going through the finals from years past, the specificity expected of us in the final is a lot less than that of the mid term.......maybe I'm a bit biased.



What do you guys think?