--%>
Assignment Help - homework help

  Some early views of heredity

Some early views of heredity:

Most of the view points were put forward before Mendel to describe the transfer of characters to the following generation.

1. Moist Vapor Theory:

This was mentioned by the Greek philosopher Pythagoras who believed that each and every organ of the animal body generated vapors and new organism was build up by the combination of various organs.

2. Fluid Theory:

This was introduced by Aristotle who was of the view that both female and male produced semen and whenever these mix the female semen that is not so pure provided the inert substance for the formation of the embryo and the male semen provide form and vitality to the embryo.

3. Preformation Theories:

Anton Von Leeuwenhoeck inspected human sperms for the very first time. This theory according to Swammerdam (1679) assumes that the sex cells either the sperm or egg contained in it the whole organism in a miniature form termed as "homunculus". Development was only a raise in size of the miniature. This hypothesis was supported by Malpighi (1673), Delepatius (1694) and Roux (1800).

68_views of heredity.jpg

 Figure: Homunculus as per Preformation Theory

4. Particulate Theory:

French biologist Maupertius stated that the body of each parent gave mount to minute particles for reproduction which blend altogether to form the offspring.

5. Pangenesis:

This theory mentioned by Aristotle (384-322 B.C.) holds that the animal body generates minute bodies termed as pangenes or gemmules that were carried by blood to the reproductive organs. Here the pengenes from two parents blend to give mount to a new individual.

This theory prevailed for numerous centuries and was accepted by great biologists like Charles Darwin (1809-1882).

Latest technology based Biology Online Tutoring Assistance

Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Heredity and Variation homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Heredity and Variation, project ideas and tutorials. We provide email based Heredity and Variation homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Heredity and Variation. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Biology homework help and assignment help services. They use their experience, as they have solved thousands of the Biology assignments, which may help you to solve your complex issues of Heredity and Variation. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.