The Importance of Natural Selection

#427 Posted by zarrar2,

I dunno Zarrar saheb. Your explanation still does not answer how an Alsation is more loyal than a Bullterrier even though both are domesticated.

Or perhaps the Bullterriers were domesticated much later than Alsations and haven't evolved those traits yet?

Hmm ... perhaps.

Zee,

I am not an expert on greyhounds but I can say this:
Dogs are an ideal example of evolution that Humans have witnessed within their existence. Domesticated dogs have been bred by humans and are a result of human intervention in nature. The greyhound or the bulldog might never have been in existence if it weren't for human intervention. Over the past thousands of years, humans have domesticated wild dogs like the wolf and have bred the ones that have commnon behaviors and traits. Rumor has it that Hitler manifested the Rotwoiller (excuse spelling) breed. Each breed has distinct traits and are "pure bred" only if they result from mating within its pedegree. For example, my labrador has similar traits to all other labradors because for hundreds of years the labrador has been bred within its kind and will differ from its common cousin the golden retreiver by very little. therefore it is not surprising that greyhounds have distinct traits from other breeds.

Re: # 424
Majumder...
Ans: Genetically similar does not ensure, the two persons will be similar...( Pastun in Pakistan evolves from muslaman to human, when migrated to different environment).This is called spiritial (better word I have to find) evolution....

... BTW #423 is a serious question and I would really want to know a plausible answer.

Zarrar sahib,

There is nothing more damaging to the cause of Indo-Pak understanding and reconciliation than the notion that Injuns and Pakis are the same people. You may want to mull on this.

Regards

#421 Posted by zarrar2,

Zarrar Saheb, why is it that a Greyhound and a German Shepherd have different personality traits even though both are dogs and would have evolved in identical manner?

Re: # 421

Zarrar Saab,

Everybody here is trying to find out the uniqueness of their whiskers...

It is ironic that hindus and muslims fight on this platform considering they are both from common ancestors dating not that far back. Homosapiens of the indo-pak race have been in the same environmental strata for centuries prior to the invasion of Muslims who convinced some that they are superior to Hindus if they believe in Islam. It was this that caused the British to take advantage of our region and make these same idiots think that they are totally different species and deserve seperate countries. You are all from the same race people.

#417 Posted by zarrar2,

Thanks for your confirmation. I've observed this phenomenon on Chowk as well that cockroaches are the most dheet creatures of all.

Zee sahib,

You are right about cockroaches. But there is something else I have read which may find disturbing. Cockroaches would be one of the few creatures to survive a nuclear war.

Regards

Re: # 415
Zee...
Ans: Not all of the cockroaces needs to change...If a cockroach can survive, whithout changing itself, then why it needs to change/evolve? A person living in Afghan/Pakisthan border will remain like a mediaval arab beduine/moslem forever. If the same animal is put in MIT, he had to be civilised for his survival. So, the Pakis sent to USA, will evolve to a civilised person, where as similar person staying in Pakistan, will not evolve...
The reaction to environmental change is not always by modifying to counter the threat. In arthropodes ( cockroach, ant, crab, prawn...), rapid breeding is also, kind of adaptation/evolution which makes the species survive natural onslaught...

you both are correct. I will explain.
Zee Sahib, cockroaches have not changed much in millions of years simply because nature allowed them to exist in their current state. The environmental changes have not affect them therefore similar genes have been perpetuating in their species. It is the same with the amoeba (single celled organism) and the whale. These creatures have been around for centuries because their mechanisms are sufficient enough to survive. However, some blue whales are becoming extinct and therefore are not sufficient enough. Humans have only been around for around 100,000 years which is a pinhead's width on the scale of 6 billion years when the first molecular life sprung on this planet.

NKG#416: you too are right. Multicelled organisms take longer in the evolutionary path because several gene combinations have to survive. Therefore it took millions of years for reptiles to develop feathers and finally resemble what we noe call birds. What takes bacteria hours and days, it takes other organisms millions of years.

Re: # 414
Zarr...
Ans: The evolution/adaptation is rapid for simple organisms. So, bacteria and virus can change very rapidly and thus still surviving and will survive...When the body becomes very complex (number of cells+different types of tissues+organisation of tissues), the process of evolution becomes very slow, and sometimes fails to cope up with the rate of change in external environment ( and becomes extinct, like Dinosaurs)...You find pesticide resistant worms, but not pestiside resistant birds (who are little higher up in the food chain; survives on worm)...

The latest Mentos Advertisement in India...
http://www.youtube.com/watch?v=LXfuUVqQUTU

Zarrar Saheb,

Is it true from fossil research that cockroaches are quite unique in being the same as they were from millions of years ago? No evolutionary change at all?

Amongst the riff raff I would like to answer a question raised earlier.
For those who do not yet believe in natural selection, you should know that any vaccinations you take epitomizes natural selection. Viruses evolves by the hour and need to be contained. The reason why you take flu shots every year is because the virus evolves. The process is simple.
Example: if you have a plain field of cotton crop, you spray it once with a pesticide X. The pesticide X kills 99% of the weed but 1% is immune. That 1% will reproduce and eventually spread its offspring all over the field. It has been a few months and you try spraying X again but it fails. Reason being, the weed has "evovled". Now you spray pesticide Y and again 99% of the weed is dead. So on and so forth, you will be left with a population of weed that is immune to Pesticides X, Y, and Z and would have to look for other alternatives. By the end of the year the weed you have in the field is almost a different species than the original weed. Now imagine this over 6 billion years.

Re: # 262
Koenr...
Ans: You have expected quoran to be science!!!...Sir/Madam, no knowledge comes from sky. People have to work hard to gain it. An arab beduine's coocked up story mixed with some popular beliefs does not make it truth (SATYA)...Ask for the 1.3 billion scientific community of their achievements, they will list whatever they were able to collect from India, China, Egypt etc. upto 13th century...After that? Pakistan is most technologically advanced country in Muslim world (I am not counting Malayasia, as it is the ethnic chinese and some Indians, who holds the industry/scientific backbone of that country. Muslims need reservation in every sphere in Malayasia)...
One of the foundations of Islam (the month long fasting...), is very much flawed (consult any doctor/ dietician, who is familar with metabolism. He/she will clear the doubt...)...