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

Explain numeric pyramid base to be smaller than other level, In a numeric p...

In a numeric pyramid is it possible for the base to be smaller than the other levels? Ever since the numeric pyramid represents the quantity of individuals in each trophic leve

Trout beck zone - lotic ecosystem, Trout beck zone - Lotic Ecosystem T...

Trout beck zone - Lotic Ecosystem This is larger and more constant than the head stream. The greater volume of torrential water carves channels into exposed rock floor (bed ro

Types of community, Types of Community On the basis of size and degree ...

Types of Community On the basis of size and degree of relative independence communities may be divided into two types: i) Major Community: These are large-sized, well org

Oxidation of enzymes action, Oxidation Some enzymes which have the sulf...

Oxidation Some enzymes which have the sulfhydryl (-SH)  group in  the catalytic site are very sensitive to oxidation. Due  to oxidation of  the  -SH  group  by  aerial  oxygen

Prozoan, classifcation of protozoans

classifcation of protozoans

Can stroke be prevented, Can stroke be prevented Brain experts are conv...

Can stroke be prevented Brain experts are convinced that several strokes can be prevented with proper attention to lifestyle factors which increase risk, including smoking, exc

Explain about s-shaped incision for a mini pedicle flap, Q. Explain about S...

Q. Explain about S-Shaped incision for a mini pedicle flap? The S - shaped incision is indicated where a papilla needs to be developed and was first described by Palacci. This

Show Relation between tissue and the implant material, Relation between Tis...

Relation between Tissue and the implant material The biologic interaction between the tissue and the implant material at an  interface may result in a variety of phenomena such

Caracterized by progressive loss of the axonal myelin sheath, Q. What are a...

Q. What are a few diseases characterized by progressive loss of the axonal myelin sheath? Multiple sclerosis is a severe disease caused by progressive destruction of the myelin

State the basic properties of light, Question 1 State the basic propert...

Question 1 State the basic properties of light. Discuss the special features of ultra-microscopy and phase contrast microscopy Question 2 What are ultrasonic waves.

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