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

The principle of dna cloning, Assume an experimental target that is to make...

Assume an experimental target that is to make vast amounts of a particular DNA fragment in pure form from a combination of DNA fragments.  Whereas the DNA fragments can be introduc

Define iodothyronine deiodinases - functions of selenium, Define Iodothyron...

Define Iodothyronine Deiodinases - functions of selenium in humans? Another group of selenoproteins are the iodothyronine deiodinases essential for the conversion of thyroxine

Crab, What are the excretory organs of crab

What are the excretory organs of crab

Explain the protection of erythrocytes and cell membrane, Explain the Prote...

Explain the Protection of erythrocytes and cell membrane? Protection of erythrocytes: Vitamin E protects erythrocytes from haemolysis by the production of oxidizing agents

Do sponges have circulatory system, Q. Do sponges have circulatory, nervous...

Q. Do sponges have circulatory, nervous and excretory systems? Sponges do not have a nervous system neither excretory system nor circulatory system.

Viral Replication, 1. You are observing adsorption of a virus to the host c...

1. You are observing adsorption of a virus to the host cell, it uses long leg-like structures, what are they called?

What is the difference between dna and rna, Q. Concerning their biological ...

Q. Concerning their biological function what is the difference between DNA and RNA? DNA is the source of information for RNA production (transcription) and thus for protein syn

Describe about carbohydrates-fats and proteins, Q. Which are the three part...

Q. Which are the three parts of the small intestine? The small intestine is divided into three portions: duodenum, ileum and jejunum. Q. By generally dividing food into car

What are atherosclerosis, Atherosclerosis, the most common part of hardenin...

Atherosclerosis, the most common part of hardening of the arteries, is characterized by the presence of cholesterol-rich arterial thickenings (atheromas).  This progressive  diseas

Malignant catarrhal fever (mcf), M a l i g nant catarrhal fever (MCF) ...

M a l i g nant catarrhal fever (MCF) Malignant catarrhal fever is invariably fatal generalized lymphoproliferative disease of cattle and sometimes of wild ruminants. It is

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