modern dogs re direct descendant of the gray wolf they first appeared about 130000 years ag0 tod

Modern dogs re direct descendant of the gray wolf they first...

Modern dogs are direct descendants of the gray wolf. They first appeared about 130,000 years ago. Today, there are about 150 different breeds of domestic dogs, a few of which are shown below: Gray wolf All modern domestic dogs are descendants of the gray wolf, adapted from Pbg. Org. The great variety of modern dogs can best be explained by selective breeding of dogs over many years, not the cloning of domestic dogs or genetic alterations in gray wolves alive today. Natural selection favored wolves over dogs.

Transcript

00:01 Hello students.

00:02 So according to the question, what is given is the concept of selective breeding.

00:12 Now what is required for us is to find the reason behind the different varieties of modern domestic dogs.

00:45 Dogs existing now.

00:52 Okay.

00:53 Before we get into the explanation, let me show you the image.

01:12 How can we explain this or what is explained required with respect to the image is as we see that the common ancestor for the domesticated dogs is nothing but the grey wolf.

01:27 Now these dogs variety whatever you see here in fact there are more in nature some of it has been given in the image here is we need to find out the reason of how did so many varieties of you know dogs came into existence either is it because of natural selection or because of artificial or selective selection now my dear friends, as you see it here from one common ancestor, so many divergent domestic dogs have come into existence.

02:16 Now this is very much similar to that of human evolution.

02:24 In human evolution, similar? yes? so in human evolution, so many stages came into existence was because the nature acting on it.

02:36 In fact, the organisms on the process of adaptation showed evolution and that is why so many species were seen.

02:53 So here the driving force for diversification of species is the nature.

02:58 Now if you see it here, the driving force for existence of so many varieties of domestic dog breeds is because of the inter -breeds.

03:10 Breeding brought by humans or initiated by humans.

03:29 So as given in the question, almost like one lack year before itself or one like years before itself, we could see the domesticated dogs...

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