Which is smaller gene DNA or chromosome?
From smallest to largest: nucleotide, gene, chromosome, genome. … A gene is therefore composed of many pairs of nucleotides. A chromosome is a long strand of DNA which is coiled up with various proteins. A chromosome contains many genes.
Is gene the smallest cell?
Gene is the basic functional and physical unit of heredity and is made up of DNA. … It is a membrane-bound structure and contains the hereditary information. A cell is the smallest functional unit of life and contains nucleus and cytoplasm in a membrane-bound structure.
Are chromosome the smallest?
Chromosome 21 is one of the 23 pairs of chromosomes in humans. Chromosome 21 is both the smallest human autosome and chromosome, with 48 million base pairs (the building material of DNA) representing about 1.5 percent of the total DNA in cells.
Is a genome smaller than a gene?
Both of these are essential bio molecules within all life-forms on Earth. Nucleotides come after genes. From the above explanation it is clear that the series of organisation of genetic material from largest to smallest is Genome, Chromosome, Gene, Nucleotide which is given in the option D.
How many genes are in a chromosome?
Each chromosome contains hundreds to thousands of genes, which carry the instructions for making proteins. Each of the estimated 30,000 genes in the human genome makes an average of three proteins.
Is a codon smaller than a gene?
From smallest to largest, the order is nitrogenous base, nucleotide, codon, gene, chromosome, nucleus, and cell. … RNA nucleotides contain a sugar called ribose; DNA nucleotides contain a similar sugar called deoxyribose.