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

Briefly explain about the flexed-arm hang test, Briefly explain about the F...

Briefly explain about the Flexed-arm Hang Test? Persons who cannot do one pull-up may do the flexed-arm hang. Using the same hand position as in pull-ups, subject takes flexed-

Studying the main parts of a flower, Studying the main parts of a flower ...

Studying the main parts of a flower Study specimens of large easy flowers such as tulips or lilies. Count the stamens and observe how they are arranged about the central pistil

What are the reproductive novelties, Q Do beings of the class Reptilia have...

Q Do beings of the class Reptilia have indirect or direct development? In beings of the class Reptilia the embryonic development is direct. So there is no larval stage. Q.

Define the needs for enteral feeding, Define the needs for Enteral Feeding?...

Define the needs for Enteral Feeding? For enteral feeding following need to be considered: - In preterm calorie density to be 0.8 Kcal/ml, - LBW formulas used: protein -

What signifies two different alleles the gametes always pure, What is signi...

What is signified by saying that in relation to a given trait conditioned by a gene with two different alleles the gametes are always "pure"? To say so that the gametes are pur

Oxidative phosphorylation, Oxidative phosphorylation Oxidative phosphor...

Oxidative phosphorylation Oxidative phosphorylation is a metabolic pathway which uses energy released through the oxidation of nutrients to generate adenosine triphosphate (ATP

How have prokaryotic cells give origin to aerobic eukaryotic, How have prok...

How have prokaryotic cells given origin to aerobic eukaryotic cells and to photosynthetic aerobic eukaryotic cells? As per to the most accepted hypothesis aerobic eukaryotic ce

Sodium - mineral elements, SODIUM The element is available in table sa...

SODIUM The element is available in table salt. A proper balance of sodium and potassium is essential. Its absorption is under control of aldasterone. The various f

What is the use of uristix, What is the Use of Uristix There are some e...

What is the Use of Uristix There are some enzymatic products and reagents impregnated on paper or plastic strips and dipping them in urine provide the results in less time comp

A monohybrid cross, A monohybrid cross: A.Determines the genetic makeup of ...

A monohybrid cross: A.Determines the genetic makeup of an organism B.always involves homozygous alleles. C.always involves organisms that are heterozygous at all loci. D.Always inv

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