Sodium and chlorine atoms combine readily because they both tend to lose electrons. true or false

False, Sodium loses electrons (making it a cation) and chlorine gains an electron (making it an anion). This is because both atoms need a full outer shell in order to bond.

Sodium is part of the group I which tends to lose an electron. On the other hand, chlorine atom is in group 17 which tends to gain one electron. The combination of these atoms is due to transfer of electron from one element to the other. 

The answer would be c, white eyes are homozygous recessive. in the early 1900s, morgan conducted several experiments with vinegar  flies (drosophila). one  sample revealed an anomaly: a  white-eyed, single male fly. he attempted to breed this fly with the typical red-eyed females. the offspring were all red-eyed. using flies from this new generation (brother-sister pairs)  produced some red-eyed and a few white-eyed flies. the white-eyed were all male. in later experiments, he was able to produce white-eyed females. this proved that white eyes are not lethal to either sex (ruling out a and b). since the percentage of white eyes to red eyes is so low, white eyes are not a dominant trait. it would be a recessive trait.