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3
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1answer
34 views

What is the purpose of narwals' tusks?

I've heard that narwals can grow their tusks up to 16 ft long. What do they need the tusk for? Hunting? Comunication?
2
votes
1answer
28 views

DNA replacement: new species

This is a hypothetical question What would happen if the DNA of a prokaryote was replaced with the one of a prokaryote of another species, would the cell structures change and adapt to the new DNA ...
0
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0answers
57 views

Peristaltic pumps in animal perfusion - how important are physiological flow parameters?

Animal perfusion is usually done according to this or very similar procedures. Though not explicitly detailed in this video, the perfusion fluid infused into the Aorta is usually driven via a ...
0
votes
0answers
45 views

How to measure concentrations of different metals from the environment?

Suppose that different kind of metals and chemicals (e.g. magnesium, sodium, copper) got transmitted to environment e.g. as a cause of an accident. How would measure the levels of those metals and ...
2
votes
1answer
56 views

How do C. elegans manage nutrition?

If there is ample amount of food, do C. elegans worms know when to stop eating or do they store extra energy? Could they put this extra energy to use by moving faster or putting more eggs?
3
votes
1answer
79 views

What is the difference between a DPY-10, DPY-11, and DPY-13?

My TA mentioned these three mutations of C. elegans since we started working with the worms but seems to skip over what the differences are...
3
votes
1answer
63 views

Does isolation have any effect upon mouse behavior?

I work with a lot of mice. I don't do any behavioral analysis, I just inject DNA or RNA and do imaging assays. However, I have noticed some effect of isolation on mouse behavior. Normally, the mice ...
3
votes
2answers
63 views

What is an Ihh-/- mouse?

This one is too basic question: I just came across $Ihh^{-/-}\ $ mouse. Is that means this mouse devoid of that gene Ihh. What is this sign called and are there other such representations?
4
votes
1answer
78 views

Which turtle species was on board the Iranian Space Agency launch in 2010?

They are seen briefly in this video: https://www.youtube.com/watch?v=nZoNdf6hlII The launch made international news, but there was no mention of the species. Here's the entirety of Wikipedia's ...
3
votes
1answer
50 views

Is there a superterm combining “animal line” and “cell line” in disease models?

Biologists researching diseases will frequently use animal models. The way I understand it, there are species of animals, such as "mouse", and lines of mice, such as ...