Apomixis, Biology

Assignment Help:

Apomixis

The formation of sporophyte from the gametophyte without sexual process signifies apomixis. It relates to the replacement of alternation of a reduced gametophyte and an unreduced sporophyte by an unreduced gametophyte and sporophyte. It occurs in relatively in about 35 families. The most common being Asteraceae and Poaceae. Apomixis can be classified into two types, recurrent (in non- reduced embryo sacs) and non-recurrent (in reduced embryo sacs). The later relates to development of haploid embryos without the actual fusion of gametes.

275_Apomixis.png

Figure: Diagrammatic representation of Apomixis types


Related Discussions:- Apomixis

Explain about the importance of vitamin e in human body, Explain about the ...

Explain about the Importance of Vitamin E in Human Body? Vitamin E is the generic term for tocopherols and tocopherols that have a Phenolic functional group on a chromane ring

What are the factors that limit ability to fully classify, What are the fac...

What are the factors that limit our ability to fully classify and understand microbial diversity and what implications do these challenges have for environmental and health managem

Phylum, what is phulum cnideria

what is phulum cnideria

Speciation, SPECIATION - Origin of new species: An isolated popula...

SPECIATION - Origin of new species: An isolated population of a species independently develops different types of mutations. The later accumulate in its gene pool. Afte

Stratification, Stratification On the basis of the variation in air tem...

Stratification On the basis of the variation in air temperature. the atmosphere has been divided vertically into four layers: (figure shown below) thee troposphere, stratospG,

Light stratification - lake ecosystem, Light Stratification - Lake Ecosyste...

Light Stratification - Lake Ecosystem The penetration of light in water bodies is limited depending on the transparency of water and its ability to absorb light. On the basis

Which substance starts clotting in humans after a wound, When a wound occur...

When a wound occurs in humans, platelets in the blood activate a substance that starts clotting process. The substance which starts clotting is: a) Adenosine (pron: ah-den-ah-s

The population thus contains secretors, The A and B antigens in humans may ...

The A and B antigens in humans may be found in water-soluble form in secretions, including saliva, of some individuals (Se/Se and Se/se) but not in others (se/se). The population t

What do numeric pyramids represent, What do numeric pyramids represent? ...

What do numeric pyramids represent? Numeric pyramids show the number of individuals in each trophic level of a food chain.

Animal pharming, A n i m a l pharming Using animals...

A n i m a l pharming Using animals as bioreactors is also cost-effective and advantageous because animals naturally carry the cellular mechanisms needed 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