Cumulative General Science/Technology Quiz

[Perfection]

Some form of kitty or doggy cancer?

 

[ori]

Ok I'm thinking vegetables now.....with big hacking vegetable tumors.

Agrobacterium tumerfaciens?

never seen a mammalian vegetable

Some form of kitty or doggy cancer?

now give me the age and you win
doggy cancer it is...

 

[Perfection]

25 years?
50 years?
75 years?
100 years?
150 years?
200 years?
250 years?
300 years?
400 years?
500 years?
750 years?
1000 years?
1500 years?
2000 years?
3000 years?
4000 years?
5000 years?
8000 years?
10000 years?

 

[Brighteye]

130 years old?

 

[ori]

130 years old?

It was discovered 130 years ago, but it is a tad older:

200 years?
250 years?
300 years?
400 years?
500 years?
750 years?
1000 years?
1500 years?
2000 years?

Perfection got the doggy cancer right - and with brute force found the age...

The answer is Canine Transmissible Venereal Tumor:

CTVT, also known as Sticker's sarcoma, is a histiocytic tumor that is usually transmitted among dogs through coitus but may also spread through licking, biting, and sniffing tumor-affected areas. (...)
Our analysis of divergence of microsatellites indicates that the tumor arose between 200 and 2500 years ago. Whether this time period represents the time the tumor first arose or whether it represents a later bottleneck in the tumor's dispersion as a parasite cannot be resolved. While this estimated date indicates a relatively recent evolutionary origin, CTVT represents the oldest known mammalian somatic cell in continuous propagation, having undergone countless mitoses and host-to-host transfers.

 

[El_Machinae]

Okay, that's gross

 

[Perfection]

WTH is a Roche Limit?

 

[El_Machinae]

When you've given so many inkblot tests that you actually can see pictures in the inkblots?

Or is that a Rorschach Limit?

 

[Perfection]

Nopez

 

[GoodGame]

Hey Perfection, time for a new question

 

[Perfection]

I'm out I open floor, as for Roche limit, wiki it foo', Perfy is too tired!

 

[GoodGame]

Ok, What's a histone, and what's is function in the bigger picture of things?

 

[Perfection]

Is that the crap that binds DNA together Eukaryotic cells?

 

[GoodGame]

Well yes in the same way as the statosphere holding that junk that blocks UV light.

 

[El_Machinae]

Its arrangements expose certain sections of DNA to the cellular machinery. It's what allows a muscle cell to have the same DNA as a neuron, but only express the specific genes.

 

[GoodGame]

Correctomundo!

It's a class of proteins that bind DNA up into a mass of chromatin to make the chromosomes. The DNA wraps around the histones such that they would be an extremely long if the histones weren't there. They also appear to be modifiable and that appears to have a role in moderating gene express and DNA repair.

Histones are only found in eucaryotes.


Your turn.

 

[El_Machinae]

What's the most evolutionarily divergent (from us) animal you can find which intentionally makes eye contact?

 

[Catharsis]

A crab of some sort?

 

[Sidhe]

What's the most evolutionarily divergent (from us) animal you can find which intentionally makes eye contact?

A fish of some sort would be my guess, because that way it is more viable evolution wise, I mean it can escape easier.

OK I've thought a little more, a mollusc, some sort of bicuspid? .

 

[El_Machinae]

I would be amazed if you could find a source for crabs or bicuspids (you probably mean some type of mollusk, I assume) intentionally making eye contact. It would shake my world.
(as an adendum, the eye contact is cross-species, not merely intra-species)