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

Define the skin capillary fragility test, Define the Skin Capillary Fragili...

Define the Skin Capillary Fragility Test? One of the earliest signs of ascorbic acid deficiency is the fragility of the capillaries. Capillary fragility is measured by applyin

Dermato phytoses, Dermato phytoses Dermatophytosis (ringworm) is a cos...

Dermato phytoses Dermatophytosis (ringworm) is a cosmopolitan, superficial and highly contagious disease of man, animals and birds. The infection is caused by fungi of three g

What are cotyledons, What are cotyledons? Cotyledons, or seed leaves, a...

What are cotyledons? Cotyledons, or seed leaves, are structures formed by the embryo of angiosperms to absorb nutrients from the endosperm and to keep and transfer these nutrie

Analysis of the written reports, Analysis of the written reports   of  serv...

Analysis of the written reports   of  service in relation  to  the fitness, quality and efficiency of the service should be provided. The routine record-checking is always insuffic

Human respiratory system - thoracic cavity, THORACI C CAVITY - Thor...

THORACI C CAVITY - Thoracic cavity is air tight. On dorsal side vertebral column present. On ventral side sternum present. On lateral side 12 pairs ribs present. On p

Define protein-energy malnutrition - nutritional deficiency, Define Protein...

Define Protein-Energy malnutrition - Nutritional Deficiency? Even in normal times, PEM is a problem in many developing countries, most commonly affecting children between

Define gluconeogenesis, What is gluconeogenesis? Highlight its significance...

What is gluconeogenesis? Highlight its significance giving any two examples Gluconeogenesis (i.e synthesis of new glucose) is the synthesis of carbohydrate from non-carbohydrat

Name the compound that is phosphorylated for atp formation, What is the com...

What is the compound that is phosphorylated for ATP formation? What is the resulting compound when ATP liberates energy? ATP, or adenosine triphosphate, is produced after the

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