Theory of epigenesis - pre-mendelian theory, Biology

Assignment Help:

Theory of Epigenesis

(i)          It was proposed by C.F. Wolff & supported by Von Baer.

(ii)         Wolff proposed that germ cells contain definite but undifferentiated substances which, after fertilization becomes organized into various complex body organs (New factors) which form the adult. This idea was referred to as epigenesis.

(iii)        The theory of epigenesis is similar to our present day gene concept of heredity.

(iv)        Wolff rejected the preformation theory by providing detailed structure of ovum and sperm in chick.

(v)         Epigenesis term was coined by William Harvey.


Related Discussions:- Theory of epigenesis - pre-mendelian theory

Polyphyletic theory, Please I need short notes on polyphylrtic theory

Please I need short notes on polyphylrtic theory

Define difference between plant systematic and taxonomy, Define Difference ...

Define Difference between Plant Systematic and Taxonomy? Before coming to principles of taxonomy let us discuss the difference between taxonomy and systematic. Systematic is th

Arthropods, what are the general characteristics of arthropods?

what are the general characteristics of arthropods?

Goal of bcc programme, The overall goal of BCC programs for diabetes mellit...

The overall goal of BCC programs for diabetes mellitus is to promote behaviors that control diabetes mellitus and prevent complications. These include: Following treatment

Can you explain antibiotics, Q. Can you explain Antibiotics? The antibi...

Q. Can you explain Antibiotics? The antibiotics are the chemicals produced by microorganisms which are able to destroy or inhibit the growth of other microorganisms. The therap

How are lipids classified, Regarding solubility, how are lipids classified?...

Regarding solubility, how are lipids classified? Fats and oils are hydrophobic molecules, i.e., they are non polar and insoluble in water. Lipids in general are molecules with

Determine the greater palatine nerve and vessel, Greater Palatine nerve and...

Greater Palatine nerve and vessel  The greater palatine nerve runs forward in a groove on the inferior surface of the hard palate to communicate with nasopalatine nerve in inci

What is diabetes mellitus, Question 1 What is diabetes mellitus? Discuss b...

Question 1 What is diabetes mellitus? Discuss briefly its pathogenesis. Explain how would you diagnose this disorder Question 2 Discuss the following Glucose tolerance

Heart of cockroach, Heart of cockroach: In cockroach, heart is situa...

Heart of cockroach: In cockroach, heart is situated in pericardial sinus. It has13 chambers These are one behind the other. Each chamber opens into preceeding one. The

Pethidine and methadone, PETHIDIN E - Meperidine hydrochloride. ...

PETHIDIN E - Meperidine hydrochloride. Widely used as narcotic analgesic. It has local anesthetic action. METHADON E - It is an orally effective anal

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd