Organisms can have both dominant and recessive genes. an organism must have one copy of a dominant gene for that certain dominant trait to appear. however, recessive genes require two two copies of the gene for it to appear.

in a flower population, purple flowers are a dominant trait and white flowers are a recessive trait.
which statement is most likely correct about the offspring from this flower population?
a) offspring that receive a dominant gene from each parent will have white flowers.
b) offspring that receive a recessive gene from each parent will have purple flowers.
c) offspring that receive a recessive gene from one parent and a dominant gene from another parent will have white flowers.
d) offspring that receive a recessive gene from one parent and a dominant gene from another parent will have purple flowers.

D is the correct answer!

Only one dominant gene is needed for that trait to show, in this case, purple flowers rather than white. As there is ONE present dominant gene, the purples will in fact turn out purple.

it’s lava came from an explosive eruption

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."