Phrase by 'John Tyler Bonner'
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The sudden appearance of mushrooms after a summer rain is one of the more impressive spectacles of the plant world.
Author: John Tyler Bonner - American EducatorWorld , Rain , Plant , Appearance
My prime interests are in evolution and development. I use the cellular slime molds as a tool to seek an understanding of those twin disciplines.
Author: John Tyler Bonner - American EducatorUnderstanding , Development , Evolution
Evolution, cell biology, biochemistry, and developmental biology have made extraordinary progress in the last hundred years - much of it since I was weaned on schoolboy biology in the 1930s. Most striking of all is the sudden eruption of molecular biology starting in the 1950s.
Author: John Tyler Bonner - American EducatorLast , Progress , Biology , Evolution
When, as an undergraduate, I began experiments on these slime molds in 1940, only one other person, Kenneth Raper, was working on them at that time. In fact, he discovered the model species Dictyostelium discoideum, which is the species used in the majority of the experimental work today.
Author: John Tyler Bonner - American EducatorTime , Work , Today , Person
As in all of biology, comparative studies showing differences among species are often helpful for a better understanding of the basic mechanisms; with all its advantages, there is a danger of clinging exclusively to one model organism.
Author: John Tyler Bonner - American EducatorBetter , Understanding , Danger , Biology
There are good reasons why natural selection has become widely accepted as an explanation of evolutionary development. When applied to mammals and other large animals, it fits perfectly. But we cannot assume that all evolutionary steps arise from selection, particularly when looking at smaller animals.
Author: John Tyler Bonner - American EducatorGood , Looking , Development , Animals
It is hard to explain the huge variety of diatoms - a microorganism that has 100,000 species - in terms of natural selection.
Author: John Tyler Bonner - American EducatorExplain , Hard , Natural , Variety
The reason for natural selection's great success is that it provides a satisfying explanation of how evolution might have occurred: individual organisms vary, and if those variations are inherited, the successful ones will survive and propagate and pass down their desirable traits to succeeding generations.
Author: John Tyler Bonner - American EducatorGreat , Down , Success , Survive
In the seventeenth century, it was held by some that inside a human sperm there was a minute human being - a homunculus - that was planted inside the womb. Development consisted of the miniature homunculus enlarging and passing through birth and on to maturity-just like inflating a balloon.
Author: John Tyler Bonner - American EducatorBeing , Inside , Human Being , Development
Changes in size are not a consequence of changes in shape, but the reverse: changes in size often require changes in shape. To put it another way, size is a supreme regulator of all matters biological. No living entity can evolve or develop without taking size into consideration. Much more than that, size is a prime mover in evolution.
Author: John Tyler Bonner - American EducatorWay , Living , Changes , Evolution
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