Biology Quotes - Page 2

Might one not say that in the chance combination of nature's production, since only those endowed with certain relations of suitability could survive, it is no cause for wonder that this suitability is found in all species that exist today? Chance, one might say, produced an innumerable multitude of individuals; a small number turned out to be constructed in such fashion that the parts of the animal could satisfy its needs; in another, infinitely greater number, there was neither suitability nor order: all of the later have perished; animals without a mouth could not live, others lacking organs for reproduction could not perpetuate themselves: the only ones to have remained are those in which were found order and suitability; and these species, which we see today, are only the smallest part of what blind fate produced.

The deviation of man from the state in which he was originally placed by nature seems to have proved to him a prolific source of diseases. From the love of splendour, from the indulgences of luxury, and from his fondness for amusement he has familiarised himself with a great number of animals, which may not originally have been intended for his associates.The wolf, disarmed of ferocity, is now pillowed in the lady's lap. The cat, the little tiger of our island, whose natural home is the forest, is equally domesticated and caressed. The cow, the hog, the sheep, and the horse, are all, for a variety of purposes, brought under his care and dominion.

No existing form of anthropoid ape is even remotely related to the stock which has given rise to man.

The tendency to variation in living beings, which all admitted as a matter of fact; the selective influence of conditions, which no one could deny to be a matter of fact, when his attention was drawn to the evidence; and the occurrence of great geological changes which also was matter of fact; could be used as the only necessary postulates of a theory of the evolution of plants and animals which, even if not at once, competent to explain all the known facts of biological science, could not be shown to be inconsistent with any.

Biomasses are a biological reality that cannot be denied as existing, but even though they exist physically, yet they have not attained the height of Homo sapiens. Humans could be termed as biomasses when they don’t fully put into use their human qualifications. Men and women that don’t bother to think. Men and women that don’t bother to notice things that are out of order. People who are indifferent about the happenings around them. Men and women that don’t respond with solution to the challenges of the era. All of these people are united by one common name BIOMASSES.

Natural selection is not the wind which propels the vessel, but the rudder which, by friction, now on this side and now on that, shapes the course.

The purpose of Neurotheology shall be to ease human sufferings with a deeper understanding of the neurobiological substrates of spirituality and divinity.

Every single cell in the human body replaces itself over a period of seven years. That means there's not even the smallest part of you now that was part of you seven years ago.

The Everglades was the only place on earth where alligators (broad snout, fresh water, darker skin) and crocodiles (pointy snout, salt water, toothy grin) lived side by side. It was the only home of the Everglades mink, Okeechobee gourd, and Big Cypress fox squirrel. It had carnivorous plants, amphibious birds, oysters that grew on trees, cacti that grew in water, lizards that changed colors, and fish that changed genders. It had 1,100 species of trees and plants, 350 birds, and 52 varieties of porcelain-smooth, candy-striped tree snails. It had bottlenose dolphins, marsh rabbits, ghost orchids, moray eels, bald eagles, and countless other species that didn't seem to belong on the same continent, much less in the same ecosystem.

My own experience of over 60 years in biomedical research amply demonstrated that without the use of animals and of human beings, it would have been impossible to acquire the important knowledge needed to prevent much suffering and premature death not only among humans but also among [other] animals.

All disciplines of science are built on the causality of the relationships governing related events. Yet the theory of evolution is built upon the idea of accidental changes that resulted in complex living systems. I was unable to comprehend how the notion that an infinite number of random accidents systematically happened to produce living species, and kept improving these beings, is justified.

Seen in the light of evolution, biology is, perhaps, intellectually the most satisfying and inspiring science. Without that light it becomes a pile of sundry facts -- some of them interesting or curious but making no meaningful picture as a whole.

What was up with class today? It was watered-down porn. He practically had you and Patch on top of your lab table, horizontal, minus your clothes, doing the Big Deed.

A DNA sequence for the genome of bacteriophage ΦX174 of approximately 5,375 nucleotides has been determined using the rapid and simple 'plus and minus' method. The sequence identifies many of the features responsible for the production of the proteins of the nine known genes of the organism, including initiation and termination sites for the proteins and RNAs. Two pairs of genes are coded by the same region of DNA using different reading frames.

Homosexuality is neither a sin, nor an anomaly or a disease. It is an evolutionary variation.

I don't believe any scientific field to be superior to another.

The platypus, as it turns out, derives its DNA from a menagerie of creatures. When its genome was fully decoded, it was found only to be 80% mammalian, and had genes found previously only in reptilian, bird, amphibian, and fish DNA.

Objectivity cannot be equated with mental blankness; rather, objectivity resides in recognizing your preferences and then subjecting them to especially harsh scrutiny — and also in a willingness to revise or abandon your theories when the tests fail (as they usually do).

The outgroup is rocks.

Stop talking about “rape” and start talking about “sex”, and within a few decades India will attain the true mindset to prevent sexual assaults.

In the absence of data, we will always make up stories. In fact, the need to make up a story, especially when we are hurt, is part of our most primitive survival wiring. Mean making is in our biology, and our default is often to come up with a story that makes sense, feels familiar, and offers us insight into how best to self-protect.

A recognized fact which goes back to the earliest times is that every living organism is not the sum of a multitude of unitary processes, but is, by virtue of interrelationships and of higher and lower levels of control, an unbroken unity. When research, in the efforts of bringing understanding, as a rule examines isolated processes and studies them, these must of necessity be removed from their context. In general, viewed biologically, this experimental separation involves a sacrifice. In fact, quantitative findings of any material and energy changes preserve their full context only through their being seen and understood as parts of a natural order.

A sound Physics of the Earth should include all the primary considerations of the earth's atmosphere, of the characteristics and continual changes of the earth's external crust, and finally of the origin and development of living organisms. These considerations naturally divide the physics of the earth into three essential parts, the first being a theory of the atmosphere, or Meteorology, the second, a theory of the earth's external crust, or Hydrogeology, and the third, a theory of living organisms, or Biology.

Love is poetry plus biology.

Among all the occurrences possible in the universe the a priori probability of any particular one of them verges upon zero. Yet the universe exists; particular events must take place in it, the probability of which (before the event) was infinitesimal. At the present time we have no legitimate grounds for either asserting or denying that life got off to but a single start on earth, and that, as a consequence, before it appeared its chances of occurring were next to nil. ... Destiny is written concurrently with the event, not prior to it... The universe was not pregnant with life nor the biosphere with man. Our number came up in the Monte Carlo game. Is it surprising that, like the person who has just made a million at the casino, we should feel strange and a little unreal?

The male frog, in mating season," said Crake, "makes as much noise as it can. The females are attracted to the male frog with the biggest, deepest voice because it suggests a more powerful frog, one with superior genes. Small male frogs - it's been documented - discover that if they position themselves in empty drainpipes, the pipe acts as a voice amplifier, and the small frog appears much larger than it really is.""So?""So that's what art is, for the artist," said Crake. "An empty drainpipe. An amplifier. A stab at getting laid.""Your analogy falls down when it comes to female artists," said Jimmy. "They're not in it to get laid. They'd gain no biological advantage from amplifying themselves, since potential mates would be deterred rather than attracted by this sort of amplification. Men aren't frogs, they don't want women who are ten times bigger than them.""Female artists are biologically confused," said Crake.

Genetics might be adequate for explaining microevolution, but microevolutionary changes in gene frequency were not seen as able to turn a reptile into a mammal or to convert a fish into an amphibian. Microevolution looks at adaptations that concern the survival of the fittest, not the arrival of the fittest... The origin of species — Darwin’s problem — remains unsolved.

This view, as a rounded whole and in all its essential elements, has very recently disappeared from science. It died a royal death with Agassiz.[It had formerly been held that there were no genetic connections among species.]

If Darwinists are opposed to mentioning scientific problems with their view, you would think they would be even more opposed to mentioning intelligent design. Yet Darwinists have been discussing ID in public school science classes for years... Biology textbooks have been mentioning intelligent design since the late 1990s—but only to misrepresent and disparage it.

Evolution is promoted by its practitioners as more than mere science. Evolution is promulgated as an ideology, a secular religion -- a full-fledged alternative to Christianity, with meaning and morality. I am an ardent evolutionist and an ex-Christian, but I must admit that in this one complaint -- and Mr. Gish [Duane T. Gish the Creation Scientist] is but one of many to make it -- the literalists are absolutely right. Evolution is a religion. This was true of evolution in the beginning, and it is true of evolution still today.

All social animals, including people, live under constant pressure from two competing interests: protecting themselves from others and aligning themselves with others. When these two interests are balanced, the result is dynamic social homeostasis.

I thought the fart was a human thing. It's something to do with like, arse cheeks, or whatever.

Of the contributions made during the essayist period three call for notice: Weismann deserves mention for his useful work in asking for the proof that "acquired characters" or, to speak more precisely, parental experience can really be transmitted to the offspring. The ocurrence of progressive adaptation by transmission of effects of use had seemed so natural to Darwin and his contemporaries that no proof of the physiological reality of the henomenon was thought necessary. Weismann's challenge revealed the utter inadequacy of the evidence on which the beliefs were based. They are doubtless isolated observations which may be interpreted as favouring the belief in these transmissions, but such meagre indications as exist are by general consent admitted to be too slight to be of much assistance in the attempt to understand how the more complex adaptive mechanisms arose.

Neuroscience makes us connect with each other at an emotional level. It makes us make friends. It makes us dream more positively. It makes us more optimistic about ourselves and the world even in our darkest days. It makes us achieve our goal endowed with strength even through immense miseries. It allows us to attain the subjective reality of our fellow humans. Imbued with the understanding of the mind we can walk in the shoes of other people.

Natural selection is a mechanism for generating an exceedingly high degree of improbability.

It is not the organs—that is, the character and form of the animal's bodily parts—that have given rise to its habits and particular structures. It is the habits and manner of life and the conditions in which its ancestors lived that have in the course of time fashioned its bodily form, its organs and qualities.

The cause of nutrition and growth resides not in the organism as a whole but in the separate elementary parts—the cells.

Evolutionarily speaking, love is all about procreation.

My practice as a scientist is atheistic. That is to say, when I set up an experiment I assume that no god, angel or devil is going to interfere with its course; and this assumption has been justified by such success as I have achieved in my professional career. I should therefore be intellectually dishonest if I were not also atheistic in the affairs of the world.

When I am fully immersed in my work of nourishing humanity, it fills my head with all kinds of feel-good chemicals, such as endorphins, serotonin and dopamine. Problems occur during the brief intervals between the finishing of one work and the beginning of another. During these intervals, my biology starts to get filled with stress hormones cortisol and adrenalin, that worsens my OCD. That is why, I can’t sit still even a day after I finish writing a book. Because if I do, my OCD begins to suffocate me inside my head. Hence, as soon as I deliver a work, I have to start working on my next scientific literature.

A nutritive centre, anatomically considered, is merely a cell, the nucleus of which is the permanent source of successive broods of young cells, which from time to time fill the cavity of their parent, and carrying with them the cell wall of the parent, pass off in certain directions, and under various forms, according to the texture or organ of which their parent forms a part.

Oxygen deprivation and supplemental oxygen are both bio-hazards for Mauna Kea workers

Intelligence is the ability of a species to live in harmony with its environment.

There is nothing ideal in Nature, because it was not created by some sort of ideal Almighty Being with perfect peerless craftsmanship. Nature as it is, has evolved through millions of years out of the biological drive for survival.

We need science education to produce scientists, but we need it equally to create literacy in the public. Man has a fundamental urge to comprehend the world about him, and science gives today the only world picture which we can consider as valid. It gives an understanding of the inside of the atom and of the whole universe, or the peculiar properties of the chemical substances and of the manner in which genes duplicate in biology. An educated layman can, of course, not contribute to science, but can enjoy and participate in many scientific discoveries which as constantly made. Such participation was quite common in the 19th century, but has unhappily declined. Literacy in science will enrich a person's life.

What, after all, is so special about genes? The answer is that they are replicators. The laws of physics are supposed to be true all over the accessible universe. Are there any principles of biology which are likely to have similar universal validity? When astronauts voyage to distant planets and look for life, they can expect to find creatures too strange and unearthly for us to imagine. But is there anything which must be true of all life, wherever it is found, and whatever the basis of its chemistry? If forms of life exist whose chemistry is based on silicon rather than carbon, or ammonia rather than water, if creatures are discovered which boil to death at -100 degrees centigrade, if a form of life is found which is not based on chemistry at all, but on electronic reverberating circuits, will there still be any general principle which is true of all life? Obviously I do not know but, if I had to bet, I would put my money on one fundamental principle. This is the law that all life evolves by the differential survival of replicating entities. The gene, the DNA molecule, happens to be the replicating entity which prevails on our own planet. There may be others. If there are, provided certain conditions are met, they will almost inevitably tend to becometthe basis for an evolutionary process.

The cell, this elementary keystone of living nature, is far from being a peculiar chemical giant molecule or even a living protein and as such is not likely to fall prey to the field of an advanced chemistry. The cell is itself an organism, constituted of many small units of life.

Ugly or beautiful, it is the little creatures that make the world go round. We should celebrate and appreciated them in all their wonderful diversity.

Not only in antiquity but in our own times also laws have been passed...to secure good conditions for workers; so it is right that the art of medicine should contribute its portion for the benefit and relief of those for whom the law has shown such foresight...[We] ought to show peculiar zeal...in taking precautions for their safety. I for one have done all that lay in my power, and have not thought it beneath me to step into workshops of the meaner sort now and again and study the obscure operations of mechanical arts.

How can we distinguish what is biologically determined from what people merely try to justify through biological myths? A good rule of thumb is ‘Biology enables, Culture forbids.’ Biology is willing to tolerate a very wide spectrum of possibilities. It’s culture that obliges people to realize some possibilities while forbidding others. Biology enables women to have children – some cultures oblige women to realize this possibility. Biology enables men to enjoy sex with one another – some cultures forbid them to realize this possibility. Culture tends to argue that it forbids only that which is unnatural. But from a biological perspective, nothing is unnatural. Whatever is possible is by definition also natural. A truly unnatural behavior, one that goes against the laws of nature, simply cannot exist.

The more closely two organisms depend upon each other the harder it becomes to tell where one organism ends and the other begins.

Whenever explaining an event, we must choose from three competing modes of explanation. These are regularity, chance, and design... To attribute an event to design is to say that it cannot reasonably be referred to either regularity or chance.

When these flies were put together in all-male groups they formed long, moving chains resembling conga lines, with each male attempting (unsuccessfully) to mate with the male in front of it.

I personally cannot discern a shred of evidence for ‘[intelligent] design.’ If 97% of all creatures have gone extinct, some plan isn't working very well!

Much of the geographical work of the past hundred years... has either explicitly or implicitly taken its inspiration from biology, and in particular Darwin. Many of the original Darwinians, such as Hooker, Wallace, Huxley, Bates, and Darwin himself, were actively concerned with geographical exploration, and it was largely facts of geographical distribution in a spatial setting which provided Darwin with the germ of his theory.

I am quite sure that our views on evolution would be very different had biologists studied genetics and natural selection before and not after most of them were convinced that evolution had occurred.

If this book has a lesson, it is that we are awfully lucky to be here-and by 'we' I mean every living thing. To attain any kind of life in this universe of ours appears to be quite an achievement. As humans we are doubly lucky, of course: We enjoy not only the privilege of existence but also the singular ability to appreciate it and even, in a multitude of ways, to make it better. It is a talent we have only barely begun to grasp.

Without the harmonious electrochemical activity of all the brain structure, the very thing which we call "mind", would suddenly disappear from the face of earth.

Evolution is a blind giant who rolls a snowball down a hill. The ball is made of flakes—circumstances. They contribute to the mass without knowing it. They adhere without intention, and without foreseeing what is to result. When they see the result they marvel at the monster ball and wonder how the contriving of it came to be originally thought out and planned. Whereas there was no such planning, there was only a law: the ball once started, all the circumstances that happened to lie in its path would help to build it, in spite of themselves.

Even today a good many distinguished minds seem unable to accept or even to understand that from a source of noise natural selection alone and unaided could have drawn all the music of the biosphere. In effect natural selection operates upon the products of chance and can feed nowhere else; but it operates in a domain of very demanding conditions, and from this domain chance is barred. It is not to chance but to these conditions that evolution owes its generally progressive course, its successive conquests, and the impression it gives of a smooth and steady unfolding.