Bald head is due to use of wrong type of hair oil.

I toss three coins together. The possible outocmes are no heads, 1 head 2 head and 3 heads. So, I say that prbability of no heads is (1)/(4) . What is wrong with this conclusion?

Short hair is due to a dominant gene L and long ahir to its recessive allele 1 (in rabbit). A cross between a short-haired female and a long haired male produces a litter of 1 long haired and 7 short haired bunnies. What are the genotypes of the parents

Root hair or extension of which type of cell ?

Give one test to distinguish whether the given emulsion is oil in water type or water in oil type emulsion.