遺傳物質 Genetic material
Genetic material is the material that transmits genetic information between parents and offspring.
Except for some viruses whose genetic material is RNA, the genetic material of other viruses and all organisms with a typical cell structure are DNA.
Evolution refers to the change of genetic traits in a population between generations, and traits refer to the performance of genetic material. The essence of human evolution is the change of population genetic material,
Myllokunmingia is known to date as the highest vertebrate in the early stage of life on earth. It has a skull and skeleton made of cartilage.
The discovery of Myllokunmingia has not only advanced the entire history of vertebrate evolution including humans by 50 million years, but also rewritten and perfected the theory of early vertebrate evolution.
Tiktaalik is the first fish to have a neck. The strong ribs allow them to leave the water and allow them to have more freedom when hunting, whether on land or in shallow water.
The Tiktaalik has a structure that can support its own weight and breathe air on a hard ground. This is a key change in the evolution of the skull, allowing our distant ancestors to adapt to life on land.
The Archaeothyris was larger in size, had strong jaws, and could expand larger than other early reptiles, and had larger canine teeth, indicating that they were carnivorous animals.
The Archaeothyris is the ancestor of all single how animals, including mammals.
The Megazostrodon looks exactly like a mouse, is the size of a weasel, and behaves like a weasel. It is the earliest mammal. It is a burrowing animal and hunts at night.
The Megazostrodon lives a burrowing life, has the same diaphragm as humans, and is considered to be the ancestor of humans.
The Piesiadapis is one of the earliest known genus of primate mammals and looks a bit like squirrels. Plesiadapis still have claws, but they are very different from modern primates. These animals have four claws, which cannot bend and are very inflexible.
Some believe that the discovery of Plesiadapis has brought new discoveries to the evolution of primates, but there are also opinions that the Plesiadapis-shaped groups and modern primates do not belong to the same team.
Australopithecus has been able to walk upright, use natural tools, and may live in groups, seek food together, and jointly prevent attacks from other raptors and beasts.
Australopithecus is considered to be the first stage of the transition from ape to man, and is the ancestor of the entire Homo genus.
智人 Homo sapiens
Homo sapiens is the only existing species in the genus Homo sapiens. The development and complexity of the brain may be conducive to social life in groups. Living in groups is very conducive to obtaining prey, collecting food and communicating information in a collaborative manner, thus.
Homo sapiens are divided into early Homo sapiens and late Homo sapiens. The physical characteristics of the late Homo sapiens have no obvious differences from modern people. They can refine stone and bone tools, and know the arts such as painting and carving.
資料來源︰生命簡史 古生物放置 遊戲的資料