The Chromosome Complement
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Author | : Bernard John |
Publisher | : Springer Science & Business Media |
Total Pages | : 211 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 3709157811 |
material can serve both autocatalytic and heterocatalytic functions. Thus not only is it unique in itB capacity for self-replication but its base sequence determines the specificity of proteins. And enzyme proteins are immediately responsible for the peripheral metabolism which enables the organism to impose its own kind of order on the raw materials it absorbs. The course of development is determined not only by the nature of the genetic material but by its over-all amount and the relative frequency of the different functional units. Differential rates of epigenetic activity matter also. In theory, therefore, differential development within or even between individuals could be determined by the differential replication of the various genetic elements or by their differential activity. And further variation could arise by the differential transmission of these elements between cells. Indeed it would appear that all these possibilities are exploited by living systems. If like is to beget like, however, any genetic change which occurs during development must be undone, or else germinal units preserved from change must be set aside. As far as is known, genetic changes, even those involving only quantity or relative amounts, are reversible to only a very limited extent so that a change once done cannot be undone. Consequently genetic changes during the development of presumptive germ-lines are either non existant or minor and confined to a small class of un aggregated deter minants.
Author | : Bernard John |
Publisher | : |
Total Pages | : 206 |
Release | : 1968 |
Genre | : Karyotypes |
ISBN | : |
Author | : Wray Merrill Bowden |
Publisher | : |
Total Pages | : |
Release | : 1940 |
Genre | : |
ISBN | : |
Author | : C. D. Darlington |
Publisher | : |
Total Pages | : |
Release | : 1929 |
Genre | : |
ISBN | : |
Author | : Stanley Lamar Hooks |
Publisher | : |
Total Pages | : 56 |
Release | : 1962 |
Genre | : Chromosomes |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1940 |
Genre | : |
ISBN | : |
Author | : Jean Marie Cummings |
Publisher | : |
Total Pages | : 58 |
Release | : 1943 |
Genre | : Plant genetics |
ISBN | : |
Author | : Medical Research Council (Great Britain) |
Publisher | : |
Total Pages | : 239 |
Release | : 1964 |
Genre | : Abnormalities, Human |
ISBN | : |
Author | : Institute of Medicine |
Publisher | : National Academies Press |
Total Pages | : 287 |
Release | : 2001-07-02 |
Genre | : Medical |
ISBN | : 0309132975 |
It's obvious why only men develop prostate cancer and why only women get ovarian cancer. But it is not obvious why women are more likely to recover language ability after a stroke than men or why women are more apt to develop autoimmune diseases such as lupus. Sex differences in health throughout the lifespan have been documented. Exploring the Biological Contributions to Human Health begins to snap the pieces of the puzzle into place so that this knowledge can be used to improve health for both sexes. From behavior and cognition to metabolism and response to chemicals and infectious organisms, this book explores the health impact of sex (being male or female, according to reproductive organs and chromosomes) and gender (one's sense of self as male or female in society). Exploring the Biological Contributions to Human Health discusses basic biochemical differences in the cells of males and females and health variability between the sexes from conception throughout life. The book identifies key research needs and opportunities and addresses barriers to research. Exploring the Biological Contributions to Human Health will be important to health policy makers, basic, applied, and clinical researchers, educators, providers, and journalists-while being very accessible to interested lay readers.
Author | : Bruce Alberts |
Publisher | : |
Total Pages | : 0 |
Release | : 2002 |
Genre | : Cytology |
ISBN | : 9780815332183 |