Why is it more important to check for errors during DNA replication than

during protein synthesis?

Because DNA is the one which is responsible for provision of Codes neccessary for protein synthesis

Because DNA will be responsible for the next steps that will lead to the production of proteins, therefore, if there are errors in the DNA, the entire transcription and translation process will be compromised.

Explanation:

DNA has the formulas to form all the proteins in the body, each segment of DNA has a set of genes that indicate the order of placement of each amino acid, how many and which amino acids are used to form a certain protein, with a certain function. If there are errors in the DNA, the entire production of amino acids will be compromised, whereas errors in the production of proteins compromise only that protein.

A gene is what encodes a specific enzyme or protein. The genome is all encoded human genetic material, that is, it is all base pairs present in DNA.

The chromosome is a grouping of genes, that is, it is a strand of DNA condensed into historical proteins. A codon is just a crack of base pairs, and each crack represents an amino acid.