5. which type of blood cell is responsible for carrying oxygen?

6. how is the shape a benefit for that blood cell?

7. red blood cells contain large amounts of a protein that binds to oxygen as it diffuses into the cells.

8. which type of blood cell fights pathogens in our body?

5: red blood cells
6:The advantage of red blood cells' biconcave shape is that the surface area is increased to allow more haemoglobin to be stored in the cell.
7: hemoglobin
8:White blood cells

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.