Question

a specific segment of dna that codes for a protein *
choose
chromosome
gene
istone protein *
choose
what are the building blocks of dna? *
amino acids
nucleotides
fatty acids

Explanation:

First Question (A specific segment of DNA that codes for a protein)

A chromosome is a condensed structure of DNA and proteins, not a specific segment coding for a protein. A gene is defined as a specific segment of DNA that contains the instructions to code for a protein (or functional RNA). Histone proteins are involved in DNA packaging, not coding for proteins. So the correct option is the one labeled "gene".

Amino acids are the building blocks of proteins. Fatty acids are components of lipids. Nucleotides are the monomeric units (building blocks) of nucleic acids like DNA, as each nucleotide consists of a sugar, a phosphate group, and a nitrogenous base, and they polymerize to form DNA.

Answer:

gene

Second Question (What are the building blocks of DNA?)