Gametogenesis, Biology

Assignment Help:

The process of meiosis in animals is called gametogenesis .It takes place in the testis in male and ovary in female.

Gametogenesis is divided into spermatogenesis (formation of male gametes -sperms) and Oogenesis (formation female gametes -ova).The result is the formation of four gametes each containing half the number of chromosomes.

During the first Meiosis division in human beings the 46 chromosomes in each cell arrange themselves in 23 pairs. The chromatids each pair move apart and migrate to the opposite poles of the germ cell. This is followed by the division of the cytoplasm.

The first Meiosis division is characterized by DNA replication which forms a primary gametocyte of 46 duplicated chromosomes. This is followed by pairing of each of the two homologous chromosomes of the 46 duplicated chromosomes.


Related Discussions:- Gametogenesis

Nutrition support in elderly - parenteral, Define Nutrition Support in elde...

Define Nutrition Support in elderly - Parenteral, Enteral and Oral? Under nutrition either due to dietary deficit a due to a medical complication may arise in the elderly. The

Ice age, Ice age is an interval of geologic time between 2 million and 10,...

Ice age is an interval of geologic time between 2 million and 10,000 years ago during that period the northern hemisphere experienced several episodes of continental glacial advan

Population and sigmoid curve, Name two possible why the number of live bact...

Name two possible why the number of live bacteria cell have reached the stationary growth by 60hrs and start to die off after 12hrs?

Nervous tissue and its components, NE R V OU S TISSUE The nervous...

NE R V OU S TISSUE The nervous tissue in general develops from the ectoderm of the embryo, but the microgliocytes. It does not have a matrix. The special properti

Industrial processes that use bacteria, Q. What are few industrial processe...

Q. What are few industrial processes that use bacteria? Bacteria are used by industry in different ways. There are vaccines made of antigens present in bacteria or of attenuate

Why is the o-h bond, Why would the O-H bond in C=O-H and the OH bonding wit...

Why would the O-H bond in C=O-H and the OH bonding with a water molecule be considered weak?

Define the role of vitamin a in immune response, Define the Role of Vitamin...

Define the Role of Vitamin A in immune response? Vitamins A is essential to normal immune function and- regulation. As discussed above, during vitamin A deficiency the goblet c

Conduits-surgery for coronary artery disease, Conduits Figure: Ve...

Conduits Figure: Venous Conduits Reversed saphenous vein was the first conduit used for CABG. 'It is usually harvested from the leg starting above the ankle going up

Other agro-industrial byproducts, Other agro-industrial byproducts Sup...

Other agro-industrial byproducts Supply of nutrients in the livestock ration can be maintained by using the locally available industrial byproducts, which in spite of having h

Blood circulation and respiration, A person is declared to be dead upon the...

A person is declared to be dead upon the irreversible cessation of spontaneous body functions: brain activity, or blood circulation and respiration. However, only about 1% of a per

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