Francisco J. Ayala Quotes

Enjoy the top 5 famous quotes, sayings and quotations by Francisco J. Ayala.

“Insect resistance to a pesticide was first reported in 1947 for the Housefly (Musca domestica) with respect to DDT. Since then resistance to one or more pesticides has been reported in at least 225 species of insects and other arthropods. The genetic variants required for resistance to the most diverse kinds of pesticides were apparently present in every one of the populations exposed to these man-made compounds.”
— Francisco J. Ayala —

“It is probably fair to estimate the frequency of a majority of mutations, in higher organisms, between one in ten thousand and one in a million per gene per generation.”

— Francisco J. Ayala

“A hypothesis is empirical or scientific only if it can be tested by experience. A hypothesis or theory which cannot be, at least in principle, falsified by empirical observations and experiments does not belong to the realm of science.”

— Francisco J. Ayala

“Toby Tyrrell unravels the various formulations of Gaia and explains how recent scientific developments bring the hypothesis into question. His criticisms are insightful, profound, and convincing, but fair. On Gaia is wonderfully informative and a pleasure to read.”

— Francisco J. Ayala

Insect resistance to a pesticide was first reported in 1947 for the Housefly (Musca domestica) with respect to DDT. Since then resistance to one or more pesticides has been reported in at least 225 species of insects and other arthropods. The genetic variants required for resistance to the most diverse kinds of pesticides were apparently present in every one of the populations exposed to these man-made compounds.

— Francisco J. Ayala

“A few years ago, they [Neandertals] were thought to be ancestral to anatomically modern humans, but now we know that modern humans appeared at least 100,000 years ago, much before the disappearance of the Neandertals. Moreover, in caves in the Middle East, fossils of modern humans have been found dated 120,000-100,000 years ago, as well as Neandertals dated at 60,000 and 70,000 years ago, followed again by modern humans dated at 40,000 years ago. It is unclear whether the two forms repeatedly replaced one another by migration from other regions, or whether they coexisted in some areas”

— Francisco J. Ayala

Francisco J. Ayala Quotes Pictures

Want to see more pictures of Francisco J. Ayala quotes? Click on image of Francisco J. Ayala quotes to view full size.

Related Famous Quotes by Topics

• Words Cannot Express What You Mean To Me Quotes

  “J..You are the love of my life..of my forever. Words cannot express what you mean to me, but ill tell you a hundred” — Kahlen Aymes

• Quotes About Fair Wages

  “I had watched for many years and seen how a few rich families held much of Argentinas wealth and power in their hands.” — Evita Peron

• Quotes About Esperanto

  “The language of sin was universal, the original Esperanto.” — Joe Hill

• Quotes About Being Really Tired

  “It was more that his career was going down again and he was tired of the songs. He was tired of the routine.” — Priscilla Presley

• You May Not Know Quotes

  “I just realized that you may not know what fin means. It is a filmmaking term. Specifically, it is French for This movie” — Jesse Andrews

• Confront Reality Quotes

  “What is important is not so much what people see in the gallery or the museum, but what people see after looking at” — Gabriel Orozco

• Quotes About Mike Campbell

  “Mike Campbell and Don Henley and I wrote The Heart of the Matter, which was a huge hit for Don.” — J. D. Souther

• Quotes About Own Life

  “Surely the whole point of writing your own life story is to be as honest as you possibly can, revealing everything about yourself” — Judith Krantz

• I Just Love Taking Pictures Quotes

  “I just love taking pictures.” — Ren Ng

• Under The Pier Quotes

  “Im not saying dont do the work you got, but instead of this two hours of watching TV at the hotel lobby or” — Andy Andrews

• Safe In My Arms Quotes

  “Keep me safe, keep me from harm, keep me in your loving arms.” — Mindy Starns Clark

• I Have Found You Quotes

  “I have passed in ignorance through a cycle of many rebirths, seeking the builder of the house. Continuous rebirth is a painful thing.” — Gautama Buddha

• Live And Become Quotes

  “Anybody from any corner of the world can come to America to live and become an American.” — Ronald Reagan

• It's The Process Quotes

  “All romantic novels end the same way, but its the process of getting there that provides all the enjoyment.” — Candice Hern

• Thankful To Life Quotes

  “I feel that life is divided into the horrible and the miserable. Thats the two categories. The horrible are like, I dont know,” — Woody Allen