Question

Identify the correct order of organization of genetic material from largest to smallest.

• A. Chromosome, Genome, Nucleotide, Gene.
• B. Chromosome, Gene, Genome, Nucleotide.
• C. Genome, Chromosome, Nucleotide, Gene.
• D. Genome, Chromosome, Gene, Nucleotide.

Answer 1

The correct option is D

Genome, Chromosome, Gene, Nucleotide.

The correct option is D.

Explanation for the correct option:

Genome:

1. Genetic material is defined as material that contains genetic information and is passed down from generation to generation.
2. A genome is a complete set of DNA that includes all of its genes, non-coding DNA, mitochondrial DNA, and chloroplast DNA.
3. It must contain all of the information required to construct and maintain that organism. It is the largest of the options presented.

Chromosomes:

1. Chromosomes are threadlike structures composed of protein and a single molecule of DNA that is found inside the nucleus of animal and plant cells.
2. Its primary function is to accommodate the DNA within the nucleus, and a chromosome contains hundreds to thousands of genes that make organisms what they are.
3. Because the genome is the largest, its organization comes after it.

Genes:

1. Genes are the fundamental physical and functional units of heredity, and they are DNA regions that instruct cells on how to make proteins.
2. These are found on chromosomes, and genes, which contain the information needed to specify traits, are passed down from parents to offspring.
3. Its organization follows that of chromosomes because chromosomes contain the genes.

Nucleotides:

1. Nucleotides are nucleic acid building blocks that act as monomeric units in the nucleic acid polymers deoxyribonucleic acid and ribonucleic acid.
2. Both of these are necessary biomolecules for all life on Earth.
3. Nucleotides follow genes.

Final answer: Genome, Chromosome, Gene, and Nucleotide is the correct order of organization of genetic material from largest to smallest.