B) An allele is one form of a gene.
A trait is usually determined by more than one gene, much less two traits, so A is false.
Alleles are a form of a gene, and any genes have usually two alleles, not the other way around, so C and D are both false.
In my opinion, the most important legacy of ancient Greece is its politics - to be more precise, I am referring to <u>democracy</u>.
Democracy today is a very important political ideology which originated in ancient Greece. So if it hadn't been for ancient politicians and philosophers in Greece, there probably wouldn't have been even the notion of democracy today.
Answer : I believe it is a
The Iron Curtain was a symbol/boundary that divided Europe into 2 areas. From the end of World War 2 and till the end of the Cold War. It symbolized the work of the Soviet Union blocking itself from the West and other non Soviet areas.
I hope this helps you!:)