Figure 7-116. An evolutionary scheme for the globin chains that carry oxygen in the blood of animals.

Figure 7-116An evolutionary scheme for the globin chains that carry oxygen in the blood of animals

The scheme emphasizes the β-like globin gene family. A relatively recent gene duplication of the γ-chain gene produced γG and γA, which are fetal β-like chains of identical function. The location of the globin genes in the human genome is shown at the top of the figure (see also Figure 7-60).

Image ch7f60

From: How Genomes Evolve

Cover of Molecular Biology of the Cell
Molecular Biology of the Cell. 4th edition.
Alberts B, Johnson A, Lewis J, et al.
New York: Garland Science; 2002.
Copyright © 2002, Bruce Alberts, Alexander Johnson, Julian Lewis, Martin Raff, Keith Roberts, and Peter Walter; Copyright © 1983, 1989, 1994, Bruce Alberts, Dennis Bray, Julian Lewis, Martin Raff, Keith Roberts, and James D. Watson .

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