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  • Modern homo sapiens developed from a species known as homo erectus; erectus was the first hominid to walk upright hence the Latin name. The first appearance of sapiens is around 200 thousand years ago.
  • Homo erectus developed from a species named homo habilis, the first hominid to be using tools. The first appearance of erectus was around 1.8 million years ago (or 1.25 mya if you follow the idea that erectus developed from the very similar ergaster, with ergaster being the step between habilis and erectus).
  • Homo habilis is believed to have developed from Kenyanthropus platyops. Habilis first appeared between 2.5 and 2 million years ago.
  • Platyops is believed by some to be either a member-species of the genus Australopithecus, or to be a misidentification of another extant species afarensis within that genus. Both of these would explain the heritage it has; the specimens found were given their own genus and species in the interim. Kenyanthropus platyops first appeared around 3.5 million years ago.

At this point, the exactness of the human evolutionary tree is disputed; several specimens have been found, the characteristics and times of which complicate the tree somewhat. However, there are at most two or three further ancestors before we reach the most recent common ancestor of chimpanzees and humans 5 to 7 million years ago - it is some interesting research to go back further, and shall be left to the reader if they are interested.

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Why cant natural selection be the means by which a species come into being?

Natural selection is the primary way for organisms to evolve.æ However, it is not the only variable involved in evolution. Artificial selection,æwhereby specific traits are chosen to evolve by humans, is now commonplace and because we can genetically engineer organisms we will continue to do so.


How was the domestication of animals and plants was appiled to the theory of natural selstion?

These plants and animals were subjected to artificial selection so that the traits humans wanted in the organisms were selected for and the organisms not having these traits were culled. This, with some modification, is a good analogue for natural selection and artificial selection shows how organisms can be shaped over time with the proper selective pressures. The selective pressure of humans in artificial selection and the selective pressure of the environment in natural selection.


How did natural selection produce wheat?

Wheat is a crop that has been domesticated through artificial selection, not natural selection. Humans selectively bred wild grasses over thousands of years to enhance desirable traits such as seed size, yield, and resistance to diseases, resulting in the cultivated wheat we have today.


Which tends to occur more quickly natural selection or artificial selection?

Artificial selection tends to occur more quickly than natural selection because it involves intentional breeding by humans to promote desired traits in organisms. This focused approach can lead to rapid changes in specific characteristics over a few generations. In contrast, natural selection operates through environmental pressures and can take much longer for significant changes to occur, as it relies on random genetic variations and survival advantages over time.


Traits selected by humans instead of the environment?

Physical appearance, behavior, and specific skills are traits that humans often select for in breeding programs or domestication processes rather than relying on natural selection. This can lead to a rapid change in these traits over generations due to intentional selection pressures imposed by humans.

Related Questions

What is affected by Natural selection?

Humans


What is the application of natural selection theory to human society?

Sociobiology is the application of natural selection to human society Humans are the product of natural selection at the individual level and the product of evolution at the population level, so the human generated society is influenced by the natural selection of individual humans.


Why cant natural selection be the means by which a species come into being?

Natural selection is the primary way for organisms to evolve.æ However, it is not the only variable involved in evolution. Artificial selection,æwhereby specific traits are chosen to evolve by humans, is now commonplace and because we can genetically engineer organisms we will continue to do so.


Natural selection in humans?

Yes, it happens, but what is your question?


How was the domestication of animals and plants was appiled to the theory of natural selstion?

These plants and animals were subjected to artificial selection so that the traits humans wanted in the organisms were selected for and the organisms not having these traits were culled. This, with some modification, is a good analogue for natural selection and artificial selection shows how organisms can be shaped over time with the proper selective pressures. The selective pressure of humans in artificial selection and the selective pressure of the environment in natural selection.


What is the difference between selective breeding and natural selection?

In natural selection, the animals take time and evolve slowly. In selective breeding, humans can transfer genes from one organism into another organism.


Humans have countered natural selection by medically correcting phenotypes?

Humans have countered natural selection through hybrid breeding. Even crossing a male donkey with a female horse produces a mule. Crossing certain corn strains with other corn strains to produce more grain per ear.


Are humans man made?

no you idiot, we started as micro organisms and fu**ed and developed into someting else and contiued then men and women were made


Is artificial selection an agent of evolutionary change?

NO. Both artificial and natural selection are forms of Evolution in general. Both cause variation by selection within a particular population. The only difference is who is doing the selection, humans or nature.


How did natural selection produce wheat?

Wheat is a crop that has been domesticated through artificial selection, not natural selection. Humans selectively bred wild grasses over thousands of years to enhance desirable traits such as seed size, yield, and resistance to diseases, resulting in the cultivated wheat we have today.


How can rabbit affect the wombats?

the introduction of rabbits into Australia has had an effect on the Australian hairy nosed wombats. this effect has been caused due to the competition for resources.the competition for resources has caused the wombats to evolve through the natural selection process.


How the idea of artificial selection contributed to Darwin and idea on natural selection?

The concept of artificial selection, where humans selectively breed plants or animals for desired traits, helped Darwin understand the process of natural selection. He realized that if humans could influence changes in species through selective breeding, then nature could also act as a selective force, leading to the survival of organisms best suited to their environment. This insight informed Darwin's theory of evolution by natural selection, where the environment naturally selects for characteristics that provide a reproductive advantage.