Kurt Schallitz from Livermore asks

I know that the genes for red hair and for blonde hair are both recessive. What is the likely hair...

Louise Abbott asks

Can you please provide background information on catalase and how it affects substrates such as...

Frank Palmay from mississauga asks

I understand the concept of dominant and recessive alleles but I was wondering why some alleles are...

Sara J asks

What causes a human embryo heart to begin beating? And when a cell divides does it "spark"?

Sandi Schacher asks

How do cells know when to stop growing (dividing)? How does cancer change the cell so that it no...

Ryan from Toronto asks

I am in grade 7 and attempting to do a Science Fair Project. I would like to know how I could test...

Gerhard asks

What kind of permanent changes in a developing child's brain or behaviour can be caused by the...

Peter Griffin from Beaufort asks

Do all antibacterial soaps kill bacteria? How do you test if they do?

Karan Rana from Atlanta asks

I am doing some research on microarrays. I wish to know if mRNA's also have open reading frames as...

Harriet Quaide from Birmingham asks

Is it possible to test for, and diagnose, mitochondrial disorders, after death? How? Can this be...

sabiha from lahore, pakistan asks

There is a controversy among my collegues that during agarose gel electrophoresis the band that...

Christina from Orland Park asks

How do chameleons reproduce body parts?