Customer Service Chat
Get quote & make Payment
Historical review of developmental biology, Biology
Anoximander (600 B.C.) was the first western philospher who proposed the idea that "living creatures arose from the moist element".
Empedocles (500 B.C.) - The Greek philosopher suggested that foetus arose partially from male and partially from female semen.
Aristotle - Founder / Father of embryology. He described the ontogenic development of chick and many other animals. He wrote a book "De-generation Animalium" / "Historia Animalium" and proposed the "Theory of Entelechy" and given the term
According this eggs is undivided and after fertilization division take place.
Fabricus & willeum Harvey (1578-1657) wrote "Exercitationes de generation animalium" and proposed the theory "Ex ova omnia", according this theory all animals originated from eggs.
Von Baer (1792-1876) - Father of modern embryology and observed mammalian eggs and coin the word sperm.
Leeuwenhoek (1677) - First observed sperm of man.
Wilhelm Roux (1850-1924) - Father of experimental embryology.
George Newport (1858) - Discovered fertilization in frog eggs.
Hertwig (1875) - Observed fusion of male and female pro nuclei.
R.V. Graff (1672) - Discovered Graffian folicle in mammalian ovary.
C. F. Wolf - Microscopic study chick embryo and proposed that embryo converts into simple form to complex form.
Schliedon & Schwann - He describe the cellular nature of sperm & ova.
Hartsoeker - He was spermist. He compared the sperm with seeds and egg compared with soil. Seeds get nutrition from soil and grwo. Eggs provide the nutrition to embryo.
Posted Date: 10/3/2012 6:34:16 AM | Location : United States
Ask an Expert
Historical review of developmental biology, Assignment Help, Ask Question on Historical review of developmental biology, Get Answer, Expert's Help, Historical review of developmental biology Discussions
Write discussion on Historical review of developmental biology
Your posts are moderated
Write your message here..
What is the genetic disease in which this factor is absent, What is factor ...
What is factor VIII? What is the genetic disease in which this factor is absent? Factor VIII has the function of activating factor X that in its turn is essential for the trans
Efficient colors for photosynthesis, Q. What are the main divisions of whit...
Q. What are the main divisions of white light according to the electromagnetic spectrum? Which are the two mainly efficient colors for photosynthesis? The color divisions of th
Determine the psychological problems, Psychological Problems Failure to...
Psychological Problems Failure to fulfill the patient's expectations and failure to gain the patient's acceptance and satisfaction constitutes a psychological failure. It is hi
Show the embryological evidence, Q. Show the Embryological Evidence? Em...
Q. Show the Embryological Evidence? Embryology is the study of the successive stages of sporogencsis , gametogenesis and the growth and development of the embryo. The number o
Metabolic aberrations and symptoms, Q. Metabolic Aberrations and Symptoms? ...
Q. Metabolic Aberrations and Symptoms? We all know that insulin exerts an important role in the maintenance of normal blood glucose levels through its effect on the metabolism
Write the meaning of polydypsia, Q. Write the meaning of Polydypsia? In...
Q. Write the meaning of Polydypsia? Increased Thirst (Polydypsia): As the patient is losing more water through excessive urination, the patient feels thirstier and tends to tak
Acid indigestion, Acid indigestion It is also known as ruminal acidosis...
Acid indigestion It is also known as ruminal acidosis, acute carbohydrate engorgement, rumen over load or lactic acidosis. Ingestion of large quantities of highly fermentable c
Renal function & cardiovascular - change related with ageing, Define Renal ...
Define Renal Function & cardiovascular - change related with ageing? Changes associated with the cardiovascular and renal function: The progressive accumulation of athermanous
Cloning protocol, Sally Subcloner wants to clone a fragment into pUC19 (Map...
Sally Subcloner wants to clone a fragment into pUC19 (Map above - From New England Biolabs). Her fragment was a protein coding gene of 2.7 kb, and had Xho I sites on either end (a
Structures of a flowering plant, Which structures of a flowering plant give...
Which structures of a flowering plant give rise to (a) potatoes, (b) the fleshy scales of an onion? (a) A potato is a tuber formed at the end of an underground stem (b) O
Accounting Assignment Help
Economics Assignment Help
Finance Assignment Help
Statistics Assignment Help
Physics Assignment Help
Chemistry Assignment Help
Math Assignment Help
Biology Assignment Help
English Assignment Help
Management Assignment Help
Engineering Assignment Help
Programming Assignment Help
Computer Science Assignment Help
IT Courses and Help
Why Us ?
~24x7 hrs Support
~Quality of Work
~Time on Delivery
~Privacy of Work
Human Resource Management
Literature Review Writing Help
Follow Us |
T & C
Copyright by ExpertsMind IT Educational Pvt. Ltd.