Where should closures be placed when opening a container during an aseptic procedure?

a) On the work surface in the sterile field

b) Anywhere on the work surface

c) In the biosafety bin, all items should be used only once

d) In your hands in the sterile field

Please help!!

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

i think the answer is a.keratin is the pigment responsible for skin color.