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The student of nature wonders the more and is astonished the less, the more conversant he becomes with her operations; but of all the perennial miracles she offers to his inspection, perhaps the most worthy of admiration is the development of a plant or of an animal from its embryo.

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"The great variety in the size, shape, organization, and color of animal bodies raises deep questions about the origins of animal forms. How are individual forms generated? And how have such diverse forms evolved?.... deep answers have been discovered, many of them so surprising and profound that they have revolutionized our views on the making of the animal world"

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“We may marvel at the process of an egg becoming an adult, but we accept it as an everyday fact… Evolution is as natural as development”. (Chapter Introduction, Pages 5 and 6)

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“Underlying the many visible elements of animal form are remarkable processes, beautiful in their own right in the way that they transform a tiny, single cell into a large, complex, highly organized, and patterned creature, and over time, have forged a kingdom of millions of individual designs.”

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“Stripped horses, gigantic gray mammals with six-foot-long noses, and spotted cats that can outrun a Jeep… yellow Heliconius or the sparkling metallic blue Morpho dance. In the litter below, red-and-turquoise- splotched poison arrow frogs call and vivid green leaf-cutter ants go about their vast harvesting projects. The Big predators come out at night.” (Chapter Introduction, page 3)

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“We may marvel at the process of an egg becoming an adult, but we accept it as an everyday fact. It is merely then a lack of imagination to fail to grasp how changes in this process that are assimilated over long periods of time… shapes life’s development.”

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“On the open grasslands of Kenya, herds of zebras and elephants graze while solitary giraffes, ostriches, and cheetahs stroll by. Striped horses, gigantic gray mammals with six-foot-long noses, and spotted cats that can outrun  a Jeep? If these creatures did not exist, they woud be almost too incredible to believe.”

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“What is beautiful in science is the same thing that is beautiful in Beethoven. There’s a fog of events and suddenly you see a connection. It expresses a complex of human concerns that goes deeply to you, that connects things that were always in you that were never put together before.”

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“I will examine in depth the genetic and developmental foundations of the Cambrian Explosion that produced many of the basic types of animals and body parts we know today.” (Intro, pg.12)

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“Forwarded the idea of punctuated equilibria–that evolution was marked by long periods of stasis (equilibria) interrupted by brief intervals of rapid change (punctuation).” (7)

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“If these creatures did not exist, they would be almost too incredible to believe”

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“For Huxley, the nub of the argument was simple: we may marvel at the process of an egg becoming an adult, but we accept it as an everyday fact.”

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“The discovery of these and their study in the 1980s gave birth to an exciting new vista on development and revealed a logic and order underlying the generation of animal form. Almost immediately after the first sets of fruit fly genes were characterized came a bombshell that triggered a new revolution in evolutionary biology. For more than a century, biologists had assumed that different types of animals were genetically constructed in completely different ways. The greater disparity in animal form, the less (if anything) the development of two animals would have in common at the level of their genes” (Introduction, 9).

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“The evolution of form occurs through changes in development” (Intro, 4).
I think I agree with this sentence but it also confuses me just a little bit. Although evolution does occur from changes in development, development is a direct result of the genetic makeup of the animal. So although, yes evolution is a product of changes in development, I am not sure it is as simple as that.

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1. “What makes a fish different from a salamander? Or an insect from a spider? On a finer scale, clearly a leopard is a cat, but what makes it different from a domestic tabby? And closer to home, what makes us different from our chimpanzee cousins?” (Intro, 4)

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“I am certain that these pieces of art reflect the children’s deep connection to animal forms--their shapes, patterns, and colors. We all feel that connection.” (Chapter: Intro, Page: 2)