Mutation theory, Biology

Assignment Help:

MUTATION THEORY (Hugo de Vries 1901) -

  • New species are not formed by continuous variations but sudden appearance of variations i.e., mutation. Mutation are heritable and persist in successive generations.
  • Normal Plant Evening Primrose (Oenothera lamarckiana) About 50,000 specimens (Self pollination) 

168_mutation theory.png

FEATURES OF MUTATION THEORY -

  • Mutation or sports or discontinuous variations are the raw material of evolution, which appear all of a sudden and heritable.
  • Mutants varieties are marked different from the parents and there are no intermediate stages between the two.
  • The same mutation appears again and again to increase the chances of selection by nature.
  • A single mutation may produce a new species.

Related Discussions:- Mutation theory

Describe protocol that are used for endotracheal intubation, Describe Proto...

Describe Protocol that are used for Endotracheal Intubation in ICU Intubation is a three person procedure; skilled assistance is mandatory: • "Top end" intubator who coordi

Determine the implant failure after abutment connection, After Abutment Con...

After Abutment Connection The patient may complain of pain during screw tightening. Any clinical evidence should be looked into. It is important not to overtighten and overtorq

In vitro fertilisation that involves into the fallopian tub, In vitro ferti...

In vitro fertilisation is a technique that involves transfer of which one of the following into the fallopian tube? 1. Embryo only, upto 8 cell stage 2. Either zygote or ear

Procedures for diagnosis - polymerase chain reaction (pcr), P o lymer...

P o lymerase chain reaction (PCR): The PCR technique enables the exponential amplification of nucleic acid sequences from any biological samples. In the last few ye

Structure of the human vision apparatus, Q. What are the structures that co...

Q. What are the structures that compose the human vision apparatus? The organs of the human visual apparatus are the eyes the optical nerves and the visual areas of the brain l

Threatened species - wildlife, Threatened Species - Wildlife Many plan...

Threatened Species - Wildlife Many plant and animal species are threatened by the possibility of extinction. However, the seriousness of the threat varies. For example, a spec

Explain the main biological functions of the polysaccharides, What are the ...

What are the main biological functions of the polysaccharides? Polysaccharides have an energy storage function and a structural function. Polysaccharides incorporated by living

Tasks of orientation phase - phases of nurse, Tasks of  Orientation Phase: ...

Tasks of  Orientation Phase: Establishing contact with the patient  Developing  the pactlcontract  Talking to the patient  Establishing Contact with the Patient

Ecology, importance of pyramid of energy to the ecologist

importance of pyramid of energy to the ecologist

Enumerate about the luria nebraska battery, Enumerate about the Luria Nebra...

Enumerate about the Luria Nebraska battery Luria Nebraska battery will be based on the assumption that the only connecting link between Luria and that procedure is the set of

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