WE are surprised at the review of Waddington's “Introduction to Modern Genetics” by Dr. F. W. Sansome in NATURE of June 17, p. 1002. We are at a loss to know what the reviewer means when he says that ...

Basic concepts in quantitative genetics, including Mendelian genetics, gene action (additive, dominant, recessive), heritability, liability threshold model, means, variances, structure of DNA, types ...

Basic concepts in population genetics, including nucleotide diversity, random genetic drift, effective population size, coalescent theory, time to common ancestor, site frequency spectrum, linkage ...

In its short history, the Human Genome Project (HGP) has provided significant advances in the understanding of gene structure and organization, genetic variation, comparative genomics and appreciation ...