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Modern Genetic Analysis Chapter 2. The Structure of Genes and Genomes The Nature of Genomes
Table 2-2. Genomes: Sizes and Numbers of Genes

Genome | Group | Size (kb) | Number of genes

Eukaryotic nucleus
Saccharomyces cerevisiae | Yeast | 13,500 (L) | 6,000
Caenorhabditis elegans | Nematode | 100,000 (L) | 13,500
Arabidopsis thaliana | Plant | 120,000 (L) | 25,000
Homo sapiens | Human | 3,000,000 (L) | 100,000
Prokaryote
Escherichia coli | Bacterium | 4,700 (C) | 4,000
Hemophilus influenzae | Bacterium | 1,830 (C) | 1,703
Methanococcus jannaschii | Bacterium | 1,660 (C) | 1,738
Viruses
T4 | Bacterial virus | 172 (L/C) | 300
HCMV (herpes group) | Human virus | 229 (L) | 200
Eukaryotic organelles |
S. cerevisiae mitochondria | Yeast | 78 (C) | 34
H. sapiens mitochondria | Human | 17 (C) | 37
Marchantia polymorpha |
chloroplast | Liverwort | 121 (C) | 136
Plasmids
F plasmid | In E. coli | 100 (C) | 29
kalilo | In Neurospora, |
| a fungus | 9 (L) | 2

NOTE: C = circular; L = linear; L/C = linear in free virus, circular in cell.

© 1999 by W. H. Freeman and Company. All rights reserved.