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Copyright © 2000, Sinauer
Associates.
Bookshelf ID: NBK10062
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Gilbert SF. Developmental Biology. 6th edition. Sunderland (MA): Sinauer Associates; 2000.
Developmental Biology. 6th edition.
Show detailsMy dear fellow … life is infinitely stranger than anything which the mind of man could invent. We would not dare to conceive the things which are really mere commonplaces of existence.
A. Conan Doyle(1891)*
Between the fifth and tenth days the lump of stem cells differentiates into the overall building plan of the [mouse] embryo and its organs. It is a bit like a lump of iron turning into the space shuttle. In fact it is the profoundest wonder we can still imagine and accept, and at the same time so usual that we have to force ourselves to wonder about the wondrousness of this wonder.
Miroslav Holub(1990)**
- *
Doyle, A. C. 1891. “A Case of Identity.” In The Adventures of Sherlock Holmes. Reprinted in The Complete Sherlock Holmes Treasury, 1976. Crown, New York, p. 31.
- **
Holub, M. 1990. “From the Intimate Life of Nude Mice.” In The Dimension of the Present Moment. Trans. D. Habova and D. Young. Faber and Faber, London, p. 38
This final chapter on the processes of early development will extend our survey of vertebrate development to include fish, birds, and mammals. The amphibian embryos described in the previous chapter divide by means of radial holoblastic cleavage. Cleavage in bird, reptile, and fish eggs is meroblastic, with only a small portion of the cytoplasm being used to make cells. Mammals modify their holoblastic cleavage to make a placenta, which enables the embryo to develop inside another organism. Although methods of gastrulation also differ among the vertebrate classes, there are some underlying principles in common throughout the vertebrates.
Contents
- Early Development in Fish
- Early Development in Birds
- Early Mammalian Development
- References
- The early development of vertebrates: Fish, birds, and mammals - Developmental B...The early development of vertebrates: Fish, birds, and mammals - Developmental Biology
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