Scientists believe that all life on Earth evolved from a single-celled ancestor because of the similarities found in the genetic code and cellular structure of all living organisms. This suggests a common origin and shared ancestry. Additionally, the gradual changes observed in the fossil record and the patterns of biodiversity support the idea of evolution from a common ancestor.
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Not all scientist believe this, because some scientist can think and know that the chances of the beauty of the design we see in the world all around us, wither man made or of nature, is absolutely impossible. They are more chances that a Rolls-Royce on any showroom floor came from the back of a cement mixer full of all the right parts, than there are that a "single-celled ancestor" evolved into the complex world around us. because cells only come from pre-existing cells A+
The first plants evolved from a group of protists known as green algae. Green algae share many characteristics with plants, such as photosynthetic pigments and cell walls made of cellulose. This evolutionary relationship suggests that plants and green algae share a common ancestor.
The scientist who invented the very first optical microscopes and first viewed single-celled organisms in pond water was Antonie van Leeuwenhoek, a Dutch scientist from the 17th century. His groundbreaking observations and discoveries laid the foundation for the field of microbiology.
Sexual reproduction evolved before the evolution of multicellularity. Organisms were able to reproduce sexually as single-celled organisms before multicellular life forms emerged.
Because cells only come from pre-existing cells!
Because cells only come from pre-existing cells!
because cells only come from pre-existing cells
The coding of all DNA (and RNA) is the same for all life forms.
The term associated with the single-celled ancestor theory is "Last Universal Common Ancestor" (LUCA). This theory postulates that all living organisms on Earth trace back to a single-celled organism from which all life evolved.
No one knows exactly how dinosaurs started to exist, but some people believe that they evolved from single celled organisms that lived in the oceans. Some scientist believe that dinosaurs might be related to lizards or to birds.
There was no "first" human. All living things come from a common ancestor; a single celled organism that evolved over millions of years into human beings.
line of descent
line of descent
line of descent
If you are talking about a Volvox, they have already evolved into a multicellular colony.
Line of descent