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Biologists must constantly keep in mind that what they see was not designed, but rather evolved.

Francis Crick

A comparison between the triplets tentatively deduced by these methods with the changes in amino acid sequence produced by mutation shows a fair measure of agreement.
FRANCIS CRICK

Agreement Comparison Measurement Production
Protein synthesis is a central problem for the whole of biology, and that it is in all probability closely related to gene action.
FRANCIS CRICK

Action Biology Problem
There is no scientific study more vital to man than the study of his own brain. Our entire view of the universe depends on it.
FRANCIS CRICK

Brain Man Ourselves Science Study Universe
Christianity may be OK between consenting adults in private but should not be taught to young children.
FRANCIS CRICK

Children Privacy Religion Teaching Young
For simplicity one can think of the + class as having one extra base at some point or other in the genetic message and the – class as having one too few.
FRANCIS CRICK

Oneself Simplicity Thinking
The ultimate aim of the modern movement in biology is in fact to explain all biology in terms of physics and chemistry.
FRANCIS CRICK

Biology Chemistry Explanation Fact Modern Movement
My own prejudices are exactly the opposite of the functionalists’: “If you want to understand function, study structure”.
FRANCIS CRICK

Function Prejudice Science Study Understand Yourself
If, for example, all the codons are triplets, then in addition to the correct reading of the message, there are two incorrect readings which we shall obtain if we do not start the grouping into sets of three at the right place.
FRANCIS CRICK

Correction Group Place Reading Right Start
We are sometimes asked what the result would be if we put four +’s in one gene. To answer this my colleagues have recently put together not merely four but six +’s.
FRANCIS CRICK

Experiment Myself Result Science Team Work
If revealed religions have revealed anything it is that they are usually wrong.
FRANCIS CRICK

Religion Reveal Wrong
It is notoriously difficult to define the word living.
FRANCIS CRICK

Difficult Live World
Evolution is cleverer than you are.
FRANCIS CRICK

Clever Evolution Yourself
It would appear that the number of nonsense triplets is rather low, since we only occasionally come across them. However this conclusion is less secure than our other deductions about the general nature of the genetic code.
FRANCIS CRICK

Appearance Nature Ourselves Security
A man who is right every time is not likely to do very much.
FRANCIS CRICK

Accomplishment Man Right Time
It now seems very likely that many of the 64 triplets, possibly most of them, may code one amino acid or another, and that in general several distinct triplets may code one amino acid.
FRANCIS CRICK

Biology Born Possible Reproduction Science
It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material.
FRANCIS CRICK

Escape Eyes Notice Ourselves Possible Science

Biologists must constantly keep in mind that what they see was not designed, but rather evolved.

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Biologists must constantly keep in mind that what they see was not designed, but rather evolved.

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