Theory of embryology -recapitulation theory / biogenetic law, Biology

Assignment Help:

RECAPITULATION THEORY / BIOGENETIC LAW

It was proposed by Muller & Haeckel on the basis of Baer's law.

According to it, in the development of animal phylum characters are formed first & species characters are formed in the last.

Hackel proposed recapitulation theory & explained that 'ontogeny repeats phylogeny' i.e. ontogenic development of the animal repeats the evolutionary history of the animal.

"Ontogeny repeats Phylogeny" -

887_biogenetic law.png

Induction of metamorphosis started by thiourea


Related Discussions:- Theory of embryology -recapitulation theory / biogenetic law

Long-chain fatty acids, Fatty acid breakdown brings about the oxidation of ...

Fatty acid breakdown brings about the oxidation of long-chain fatty acids. The fatty acids are first transformed to their acyl CoA (coenzyme A) derivatives and then degraded by the

Phylum protozoa, #question.sir please explain amoeba as in example of proto...

#question.sir please explain amoeba as in example of protozoa

What is the heterotrophic hypothesis on the origin of life, What is the het...

What is the heterotrophic hypothesis on the origin of life? As per to the heterotrophic hypothesis the first living beings were very simple heterotrophic organisms that is not

Culturing, ime day 0 day 1 day 3 day 4 day 5 day 7 count ...

ime day 0 day 1 day 3 day 4 day 5 day 7 count blank 7 10 5 14 9 8 low 45&49 64&70 62&69 75&79 80&82 68&72

Explain oxidation-reduction potential, Oxidation-reduction  Potential (ORP)...

Oxidation-reduction  Potential (ORP) ORP is related to the concentration of oxidizers or reducers in a solution, and their activity or strength. It provides an indication of th

Define the confusion stage when drug effects on food intake, Define the Con...

Define the Confusion Stage when Drug effects on food intake? Confusion: Drugs, which impair memory or cause confusion can result in people forgetting to eat. Central nervous sy

Briefly discuss the salmonella food infection, Briefly discuss the Salmonel...

Briefly discuss the Salmonella food infection. • Salmonella food infection is caused by Salmonella gastroenteritis. Transmitted by faecal contamination of foods. In

Explain ribavirin, Ribavirin (Copegus, Rebetol, and others)  Combinatio...

Ribavirin (Copegus, Rebetol, and others)  Combination treatment of HCV with peginterferon alfa and oral ribavirin has produced higher sustained response rates than peginterfero

Ornithophily - cross-pollination, Ornithophily - Cross-pollination In ...

Ornithophily - Cross-pollination In tropical areas, the birds dominate over insects as important pollinators. The most common among them are humming-birds, sun-birds and honey

Explain hemicellulose, Hemicellulose In plant cell walls, the most abun...

Hemicellulose In plant cell walls, the most abundant compound present is α-cellulose with long fibers embedded in a matrix of cementing compounds (matrix polysaccharides). Thes

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