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Biology

Avadhuta Raya from Amsterdam asks,

I imagine there must be a gene for lactose tolerance in mammals and humans? They have to have it,...

the answer

Yes. The gene is called LCT. It encodes the protein "lactase". Anything...

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Biology

Michael Comeau from the Internet asks,

What must occur for two parents with blood type AB to have a child with blood type O?

the answer

It's nearly impossible for two AB parents to have a child with blood type...

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Engineering

Justin H from Vancouver asks,

If fresh water is pressurized to 1 MPa or greater, frozen solid at this pressure, then...

the answer

Yes it will, though the details depend on what mechanism is used to apply...

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Engineering

megan-india from pembroke dock asks,

Does the area of a solar cell affect the voltage produced?

the answer

The answer is: no. From the FAQ page of Read the answer...