What is the relationship among cells, chromosomes, genes, and DNA?

DNA is a double-helix structure found in the cell nucleus. Chromosomes straighten out the DNA so the code can be read by genes.

Tightly wound strands of chromosomes contain genes and are found in cells. The genes are coded sequences of nucleotides read by DNA.

DNA is straightened by genes which are contained in the chromosomes of a cell.

Chromosomes are tightly wound strands of DNA located in cells. Genes are sections of DNA.

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.

i think its white blood cells

i hope this