Which flow chart best shows the relationship between the cell structures that are listed? a) gene > dna > chromosome > nucleus b) gene > chromosome > dna > nucleus c) dna > gene > chromosome > nucleus d) dna > chromosome > gene > nuckeus

The correct answer is-  A) gene > DNA > chromosome > nucleus.

A gene can be described as segment of DNA ( deoxyribonucleic acid) that codes for specific protein, which inturn determines the trait/ characteristic of an individual.

Chromosomes are the threadlike structures that are composed of DNA and they are present within the nucleus of eukaryotic cells ( suh as plant and animal cell).

Thus, flow chart in option A) correctly shows the relationship between the cell structures that are listed.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.