Fundamentals of Molecular Biology - V.I. Rezyapkin 2009

Genome Organization

“The Genome is the complete set of genetic material responsible for transmitting hereditary information from a parent biological entity to its progeny, which forms the basis for Structural and functional similarities among related biological objects. The primary carrier of Genetic information is the DNA molecule, and to a lesser extent, RNA (in RNA Viruses).

The TRANSMISSION OF TRAITS across generations can also occur via protein structures, such as Prions.”

A.V. Romaniuk

The genome sizes of various living organisms vary significantly. As a general rule, an increase in biological complexity is accompanied by an increase in Genome Size (see table).

Table 11.1

Class="center">Genome Sizes

Organism

Haploid genome size in bp

Viruses

3*104 - 106

Bacteria

105 - 107

Fungi

2*107 - 5*107

Algae

5*107 - 7*107

Worms

~108

Mollusks

5*108 - 5*109

Insects

10-5*10

Crustaceans

~ 109

Echinoderms

2*108 - 2*109

Fish

3*108 - 1010

Amphibians

7*108-7*10

Reptiles

2*109 - 3*109

Birds

~109

Mammals

~3*109

Flowering plants

2*108 - 1011



Last update: 12/08/2026

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