Number of chromosomes, Biology

Assignment Help:

NUMBER

Benden and Boveri first indicated that number of Chromosomes is definite in each organism.

(1) Haploid (n) - One set of Chromosomes. i.e. one Chromosome of each type.

(2) Diploid (2n) - Two sets of chromosomes i.e. two Chromosomes of each type.

Two chromosomes of each type form pairs during fertilisation and meiosis. Such pairs called homologous pairs.

One Chromosome of a pair is received from male parent and other from the female parent (such pairing first occurs at the time of fertilisation)

Mucor haemelis  2n = 2

Haplopappus gracilis 2n = 4. Haplopappus is a plant of family compositae.

Ophioglossum reticulatum 2n = 1262

Ascaris megalocephala 2n = 2

Aulocantha (Radiolarian protozoa) 2n = 1600


Related Discussions:- Number of chromosomes

What is the type of digestive system present in beings, What is the type of...

What is the type of digestive system present in beings of the phylum Arthropoda? Are these animals protostomes or deuterostomes? The digestive tube of arthropods is complete, h

1, what are the variations of the digestive system in animals? what musthav...

what are the variations of the digestive system in animals? what musthave caused these variation

Explain the metabolic pathways in the cornea, Explain the metabolic pathway...

Explain the metabolic pathways in the cornea. Metabolic Pathways: a. 88 per cent of glucose is utilized through glycolysis. b. Only 12 per cent of glucose utilized by

Difference between adrenergic and cholinergic fibre, Difference between Adr...

Difference between Adrenergic and Cholinergic Fibre- S.NO .   1. ADRENERGI C FIBRE   Release nor adrenaline at their CHOLINE

What is hemodialysis, What is hemodialysis? Hemodialysis is the artific...

What is hemodialysis? Hemodialysis is the artificial blood filtration made by exact machines in substitution of the kidneys. Hemodialysis may be essential in patients suffering

Procedure for determination of blood glucose -nelson somogyi, Define Proced...

Define Procedure for Determination of Blood Glucose by Nelson Somogyi Method? 1. Label a series of Folins tubes with blank (B), standard (S1-S5) and sample (SA 1-2) and place

CLASSIFICATION, WHY CORALS MAY SOMETIME BE CONFUSED WITH PLANT

WHY CORALS MAY SOMETIME BE CONFUSED WITH PLANT

Which type of plant tissue is cork, Which type of plant tissue is cork? ...

Which type of plant tissue is cork? Cork, the material, for example, used to cap wine bottles, is extracted from the suber of a special oak known as cork oak.

Define basic function of secretin in the digestive process, Q. Where is it ...

Q. Where is it produced and what is the function of secretin in the digestive process? Secretin is made in the duodenum the chyme acidity causes the duodenum to release this ho

Enumerate the term diagnosis of epilepsy, State the diagnosis of epilepsy ...

State the diagnosis of epilepsy A diagnosis of epilepsy is usually confirmed by an EEG. In some epileptics, however, seizures are difficult to demonstrate in this way, except u

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