DNA is like a book because the arrangement of nucleotide in the DNA determines the entire organism’s phenotype.
Further Explanation:
Gene is defined as the linear sequence of the nucleotides that are mainly encoded for a protein having a particular function. The alleles are defined as the variant type of the gene. DNA is mainly made up of the nucleotides and also contains genetic information in the genes. Every nucleotide is composed of deoxyribose, nitrogenous base, and phosphate group. DNA is made up of four distinct type of nitrogenous base:
Each and every single chromosome consists of genes. The chromosomes are mainly present in the nucleus of a cell and it is made up of single molecule of DNA as well as proteins. The bunch like structures present in the chromosome is called nucleosomes which are considered as the smallest unit of a DNA packaging. The structural unit of a nucleosome is histones that are bound tightly in a helical fiber.
The letters in the book is similar to the nucleotide in the DNA. The meaningful combination of letter forms the information that is entitled. Similarly the arrangement of nucleotide in the DNA is responsible structural and functional behavior of the organism. That’s why DNA is referred as book which enclosed all the hereditary information of the body.
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Answer Details:
Grade: High School
Subject: Molecular Biology
Chapter: Gene expression
Keywords:
DNA, RNA, concept map, replication, double helical, nucleotides, cytosine, thymine, adenine, book, hereditary information, body, arrangement, chromosome.
