Write short notes on Embryology based upon the information known to you.
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Lamarckism is known as the very first theory of evolution. It was proposed by Jean Baptiste de Lamarck.
According to this theory, there are 4 basic propositions.Firstly, there exists a vital force internally, which helps increasing the component parts of an animal.
Secondly, he says that environment affects the growth and development of species. The third proposition says that the frequent use of an organ makes it better over time, and the disuse makes it more useless.
The fourth idea says that useful characteristics are passed on to the future generations.
According to this theory, there are 4 basic propositions.Firstly, there exists a vital force internally, which helps increasing the component parts of an animal.
Secondly, he says that environment affects the growth and development of species. The third proposition says that the frequent use of an organ makes it better over time, and the disuse makes it more useless.
The fourth idea says that useful characteristics are passed on to the future generations.
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{Hello}
(1)Embryology is the science which deal with the study of development of an organism from an embryo.
(2)Comparative study of embryonic developmental stages of various vertebrates shows that all embryos have extreme similarities during initial stages and those similarities decrease gradually.
(3)Similarities in initial stages indicate the common origin for all these animals.
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