Evolution of the globin gene family has been characterized by
a. duplication and divergence of genes.
b. fusion of exons.
c. duplication of gene clusters.
d. mutations creating pseudogenes.
e. All of the above.
Ans: e
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In a reaction that is believed to be similar to pre-biotic chemical reactions, H2S can combine with FeS to form ____
Fill in the blank with the appropriate word.
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a. glucose b. ADP c. NAD+ d. NADH e. electrons
According to the biological species concept, for speciation to occur, _____
A) the number of chromosomes in the gene pool must change B) changes to centromere location or chromosome size must occur within the gene pool C) large numbers of genes that affect numerous phenotypic traits must change D) at least one gene, affecting at least one phenotypic trait, must change