Which statement is true?(1 point) Genetic and epigenetic changes can be explained by DNA structure.

Epigenetic changes cannot be explained by DNA structure, but genetic changes can.

Epigenetic changes can be explained by DNA structure, but genetic changes cannot.

Genetic and epigenetic changes cannot be explained by DNA structure.

Epigenetic changes cannot be explained by DNA structure, but genetic changes can.

Explanation:

Epigenetics can be defined as any heritable phenotypic change that does not involve an alteration in the DNA sequence. Epigenetic mechanisms include DNA methylation, histone modifications (e.g., histone acetylation, histone methylation, etc) and regulatory non-coding RNAs (ncRNAs) pathways such as, for example, long non-coding RNA (lncRNA) pathways, small interfering RNA (siRNA) pathways, microRNA (miRNA) pathways, etc. These epigenetic mechanisms work together to modulate gene expression patterns by activating and suppressing specific genes.

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.

i think the answer is c hope this