Jean-Baptiste Lamarck
All organisms, including humans, have evolved from ancestral organisms and continue to evolve, although at a rate too slow to witness during one lifetime.
It is not correct to say that individuals evolved because it is not possible for an individual to change drastically over their own timelife. Species have the faculty to evolve as a whole not as individual organisms.
Humans produce about 40,000 litres of saliva in a lifetime.
Most cellular structures have a finite lifetime, and the cell will eventually die. Just as plant and animal species must bear offspring, new cells will be needed to perform the tasks of their predecessors. Simple organisms reproduce by division, creating a new young cell long before the first one wears out. In high organisms, specialized cells are created by certain tissues, such as the bone marrow, and do not divide once formed. Other cells are so rudimentary and sturdy that they live a very long time, such as the nerve cells in the brain.
lamarck
The use and disuse theory was proposed by Jean-Baptiste Lamarck, a French naturalist, in the early 19th century. Lamarck suggested that organisms could pass on traits acquired during their lifetime to their offspring. This theory contrasted with Darwin's theory of natural selection and is now largely discredited.
47 -_-
an organism can pass on characteristics that it acquired during its lifetime to its offspring. He was also an early proponent of the idea that evolution occurred and proceeded in accordance with natural laws.
Because lamarck thought that traits organisms aquired during their lifetime would be passed on to offspring. He believed that traits were determined by use or disuse. However, aquired traits cannot be passed on to offspring, only traits determined by DNA can.
No, Dolly the Sheep's offspring were not sterile and were very normal sheep. Dolly had six offspring during her lifetime.
Lamarck thought that traits organisms acquired during their lifetime would be passed on to offspring. He believed that traits were determined by use or disuse. However, acquired traits cannot be passed on to offspring; only traits determined by DNA can
3-14
find out for yourself
Lamarck's theory, known as Lamarckism, proposed that organisms could pass down acquired traits to their offspring. He suggested that an organism could change during its lifetime in response to its environment and these changes would be inherited by its offspring. However, this theory has been largely discredited in modern biology.
Lamarck proposed that by selective use or disuse of organs, organisms acquired or lost certain traits during their lifetime. Then passed onto offspring-leading to change in species
An acquired trait, is a trait that is developed in an organisms lifetime and is thus not inherited by its offspring. For example, humans gain knowledge over their lifetime, but they don't pass it onto their children.A trait somebody aquired, or inherited. An acquired trait is when a person develops a trait that was because of something the person did or received.