Journal
ANNUAL REVIEW OF GENOMICS AND HUMAN GENETICS, VOL 11
Volume 11, Issue -, Pages 219-238Publisher
ANNUAL REVIEWS
DOI: 10.1146/annurev-genom-082509-141806
Keywords
mammals; monotreme; marsupial; eutherian; milk; transcriptomics; caseins; LALBA; involution
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Lactation, an important characteristic of mammalian reproduction, has evolved by exploiting a diversity of strategies across mammals. Comparative genomics and transcriptomics experiments have now allowed a more in-depth analysis of the molecular evolution of lactation. Milk cell and mammary gland genomic studies have started to reveal conserved milk proteins and other components of the lactation system of monotreme, marsupial, and eutherian lineages. These analyses confirm the ancient origin of the lactation system and provide useful insight into the function of specific milk proteins in the control of lactation. These studies also illuminate the role of milk in the regulation of growth and development of the young beyond simple nutritive aspects.
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