Which of the following is not a postulate of darwins theory...

Which of the following is not a postulate of Darwin’s theory of evolution by natural selection? Some variants are passed from parents to offspring. All offspring live to reproductive maturity. Individuals within a species are variable in phenotype. Differential survival and reproduction exists among variable individuals. Only individuals with favorable variations live to reproduce and contribute offspring to the next generation.

Transcript

0:00 Hello students.

00:01 Now, in this question, they are asking regarding the five statements among which is incorrect, right? so in this case, they are asking regarding the darwin's theory of natural selection, right? so in this case, which one is wrong among these five options? to know that, first, we need to know what darwin's theory states, right? so in this case, let's first understand what darwin's theory of natural selection.

00:30 Selection will state, right? so darwin postulated that individuals within a species, they observe that they are observing variation in the phenotypes, right? you observe a variation in the phenotypes inside the species itself, within the species itself, right? and the next postulate, he said, was the struggle for existence.

00:57 What does this say? basically, you, will observe that in case of struggle of existence, the organisms, some organisms will produce or rather overproduce offspring and they have to struggle for existence, those offspring that are being reproduced need to struggle for existence, right? the third postulate was the natural selection or the survival of the fittest, right? among the species there will be only the ones that can survive will be able to survive right so in this case only the ones that are fit can be able to survive right so that will be our survival of fittest the fourth one was that the variations that are created in the parents are passed on to the offspring so what feature is it it is heritability, right? so we can say it is heritability.

02:02 Coming to the fifth one, right? he said that due to the accumulation of the variation that is caused due to the heritability, you will observe that from generation to generation, the lead of heritability will lead to speciation, right? so the fifth point was regarding the speciation.

02:25 Now, let us see the.

02:27 The third point.

02:27 The five options they have given here, right? in the first option, they have given that some variants are basically passed on from the parents to offspring.

02:37 Is this statement correct? it is correct, right? so we'll just put a small take over there.

02:42 Coming to the second statement, all offspring's live to reproductive maturity.

02:49 Did darwin state this theory? no, right? so we will put a cross mark here.

02:54 Coming to the third one...

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