In order to yield a chromosome condition, only one sperm can fertilize one egg.

The right answer is In order to yield a "diploid" chromosome.

A biological cell is diploid when the chromosomes it contains are present in pairs (2n chromosomes). The concept is generally opposed to haploid, a term for cells with single copy chromosomes (n chromosomes).

An organism or part of an organism is called diploid when its cells are themselves diploid.

answer; ///(b) it is composed of four protein chains and four heme groups;

i think that d. wind is the answer.   i missed the question when i answered a. currents.