A Quote by Ernst Mayr

The reduced variability of small populations is not always due to accidental gene loss, but sometimes to the fact that the entire population was started by a single pair or by a single fertilized female. These 'founders' of the population carried with them only a very small proportion of the variability of the parent population. This 'founder' principle sometimes explains even the uniformity of rather large populations, particularly if they are well isolated and near the borders of the range of the species.

Ernst Mayr

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Accidental Always Borders Carried Due Entire Even Explains Fact Female Founder Founders Gene Isolated Large Loss Near Only Pair Parent Particularly Population Principle Proportion Range Rather Reduced Single Small Sometimes Species Started Them Uniformity Variability Very Well

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Ernst Mayr
German - Scientist
July 5, 1904 - February 3, 2005

There are a number of attributes of species and populations that are not of any particular selective advantage to any single individual in a population but that are of great advantage to the population as a whole.

Ernst Mayr

It's a fair guess that at the rate we're destroying habitat, especially but not exclusively in the tropics, we're pushing to extinction about one species every hour. That doesn't count the species whose populations are being reduced so greatly that diversity within the population is essentially gone.

Donella Meadows

I accept extinction as best explaining disjoined species. I see that the same cause must have reduced many species of great range to small, and that it may have reduced large genera to so small, and of families.

Asa Gray

In Colombia today we have 16% of the population, which is a very small amount of the population owning 90% of the land and 20 years ago it wasn't like that.

Ingrid Betancourt

There is a single theme behind all our work-we must reduce population levels. Either governments do it our way, through nice clean methods, or they will get the kinds of mess that we have in El Salvador, or in Iran or in Beirut. Population is a political problem. Once population is out of control, it requires authoritarian government, even fascism, to reduce it.

Thomas Ferguson

I fail to understand how you can justify a poll tax on the entire population, yet exclude a significant proportion of that population from programmes that this tax is paying for.

Jonathan Dimbleby

Alaska's chief attractions are: (a) its small and insignificant human population, thanks to the miserable climate; and (b) its large and magnificent wildlife population, thanks to (a). Both of these attractions are being rapidly diminished, however, by (c) the Law of Growth and Space-Age Sleaze.

Edward Abbey

I think that my main criticism in that book was directed at the general assumption that adaptation characterizes populations and species, rather than simply the individuals in the populations and species.

George C. Williams

Frankly, I had thought that at the time Roe was decided, there was concern about population growth and particularly growth in populations that we don't want to have too many of.

Ruth Bader Ginsburg

Frankly I had thought that at the time Roe was decided, there was concern about population growth and particularly growth in populations that we don't want to have too many of.

Ruth Bader Ginsburg

I grew up on a tiny island called Guernsey, very small population, very isolated culturally but very beautiful and serene.

Mura Masa

At one point, we were stuck at the border of Peru and Colombia and met this large Haitian population that was stranded there without passports and couldn't move. We had this revelation that, as tourists, we were so free to move, and here was this other population who couldn't cross borders.

Sam Pressman

We have a huge immigration population in Sweden, but when I was younger, I grew up in a small town and, at one point, I was the only foreigner in my class. I really felt different, and I thought I looked different. Sometimes it was a good thing, sometimes I felt insecure.

Snoh Aalegra

The major novelty of my theory was its claim that the most rapid evolutionary change does not occur in widespread, populous species, as claimed by Most geneticists, but in small founder populations.

Ernst Mayr

Genocide is not a legitimate option. It's not ok to decide that an entire population has no right to live in the world. No matter whether these relationships are very proximate or very distant, there is no entitlement to expunge a population or to demean its basic humanity.

Judith Butler

If new species arise very rapidly in small, peripherally isolated local populations, then the great expectation of insensibly graded fossil sequences is a chimera. A new species does not evolve in the area of its ancestors; it does not arise from the slow transformation of all its forbears. co-author with Niles Eldridge

Stephen Jay Gould

A Quote by Ernst Mayr

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