Portion of this dna, known as a is responsible for the inheritance of a trait, like eye color or blood type in humans. a) chromosome b) codon c) gene d) nucleotide

The answer is C) gene. Chromosome is a thread-like structure in the nucleus that consists of DNA and proteins. The basic units of DNA are nucleotides. A sequence of three nucleotides is known as codon. A gene is a sequence of nucleotides, i.e. portion of DNA responsible for the inheritance of different traits, such as eye color or blood type. Thus, the correct choice is C).