Answer:
Genome size can increase by duplication, insertion, or polyploidization. Recombination can lead to both DNA loss or gain. Genomes can also shrink because of deletions. ... It is beneficial to an organism to rid itself of non-essential genes because it makes replicating its DNA much faster and requires less energy.
Explanation:
The study of genes and their function. Genomics aims to understand the structure of the genome, including the mapping genes and sequencing the DNA
