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

Kingdom protista, how many phylum does kingdom protista has?

how many phylum does kingdom protista has?

What is primary culture, Question 1 Write a short note on the following- ...

Question 1 Write a short note on the following- Totipotency Soma clonal variation Bioreactor Virus indexing Question 2 List and explain any 4 advantages of

Soil texture and structure, SOIL TEXTURE AND STRUCTURE We have seen that ...

SOIL TEXTURE AND STRUCTURE We have seen that soils are predominantly composed of particles of various sizes derived from the disintegration or decomposition of parent rock materi

State about osteogenesis, State about osteogenesis Embryologically, ost...

State about osteogenesis Embryologically, osteogenesis may be classified as either intramembranous or endochondral. When the ossification occurs directly, it is defined as intr

Explain disease dengue, Dengue Dengue fever is a viral disease transmi...

Dengue Dengue fever is a viral disease transmitted by mosquito bites that occurs worldwide in tropical and subtropical areas. Major epidemics have occurred in recent years in

Define regulation of intracellular ca concentration, Define Regulation of i...

Define Regulation of intracellular Ca concentration? The cytoplasmic calcium concentration is regulated by a series of calcium pumps, which either concentrate calcium ions with

Explain pennate diatomsrole in diatoms, Explain Pennate diatomsrole in diat...

Explain Pennate diatomsrole in diatoms? Pennate diatoms have bilateral symmetry, which presents side-by-side mirror images if divided down the middle or centerline, as seen

Examine the cysticerus larva under the microscope, Examine the cysticerus l...

Examine the cysticerus larva under the microscope? Examine the cysticerus larva under the microscope and note the following: i)  Bladder worm consists of a single layered, l

How can amine groups be classified, How can amine groups be classified? ...

How can amine groups be classified? Amines can be classify into primary amines, those to which one -R (variable radical) is attached to a -NH2, secondary amines, those where on

Direct approach to counseling, Q. Direct Approach to counseling? The di...

Q. Direct Approach to counseling? The direct approach to counselling is also called as the problem-solving approach. The counsellor collects relevant information which aims to

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