Anatomical approaches

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Anatomical approaches

• Comparative embryology
• Evolutionary embryology
• Teratology
• Mathematical modeling

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Evolutionary embryology
Jaw apparatus
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Medical embryology
Birth defects Example - KIT gene
mutations Animal models
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Medical embryology
Teratology Example Thalidomide
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Maths in Developmental Biology???!!!
Mathematics of growth Example increase of
size between larval molts Isometric
Spiral growth Example Rams horn and
nautiluss shell
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Mathematics of growth
Allometric growth
log y log b (a/c)log x a and c are growth
rates of two different body parts x initial
body size b is y when x 1
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Mathematics of growth
Allometric growth
log y log b (a/c)log x
Uca pugnax
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Mathmatics of patterning Turings
Reaction-Diffusion model
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Mathmatics of patterning Turings
Reaction-Diffusion model
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Life cycle

The view taken here is that the life cycle is
the central unit in biology. Evolution then
becomes the alteration of life cycles through
time, genetics the inheritance mechanisms between
cycles, and development all the changes in
structure that take place during one life
cycle. - J.T. BONNER (1965)
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Life cycle
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Life cycle of frog
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Life cycle of frog
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Life cycle of frog
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Metamorphosis of frog