Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
SPERMEIOGENESIS / SPERMETOLEOSIS
It is the gradual differentiation of a stationary rounded and undifferentiated spermatid into an active and motile sperm.
The spermatids formed as a result of maturation divisions are typical undifferentiated animal cells containing mitochondira, golgi body and centriole but with a haploid set of chromosomes.
In spermeiogenesis following changes take place -
(i) Formation of acrosome
Formation of Acrosome
(ii) Formation of Perforatorium
A rounded small pit present below the nucleus, in this part G actin and Ca++ ions are present. This spaces is called perforatorium space.
(iii) Nuclear changes
(iv) Tail
(v) Formation of mitochondrial spiral and middle piece
(vi) Changes in the cytoplasm
(vii) Sperm sheath
Sperm sheath is form of mucopolysaccharide. It is also called glycocalyx. This sheath probably function as antigen.
Menstrual cycle in human beings: 1) The cycle of changes in the female reproductive system that leads to formation of Ovum is called 'menstrual cycle'. It occurs once in 28 to
G a ngrenous dermatitis (necrotic dermatitis) A bacterial condition in chickens caused by spores of Clostridium septicum , sometimes that of Cl. novyi / Cl. edematiens a
Fuel Requirements - Deforestation The increasing demand for fuel wood is one of the major factors leading to the degradation of the forest ecosystem. Fuel wood is of such majo
BACK CROSS When F 1 individual (Tt) is crossed with one of the two parents, either tall (TT) or dwarf (tt), such a cross is called the back cross. There are two possibilities
Gastrointestinal Antibiotic prophylaxis is recommended for esophageal surgery in the presence of obstruction, which increases the risk of infection. After gas troduodenal surge
De Vega Annuloplasty : Classic De Vega annuloplasty is done using 2'0' double armed polyester suture with pledgets on either end. It starts with one of the needles passed fr
By-Products from Sugar Industry India is one of the important sugarcane (Saccharum officinarum) growing countries of the world. Five main by-products are available from the su
what is ecological pyramids
Which of the following structures in a vertebrate with a four-chambered heart would have blood with the highest oxygen concentration? And why? A. Arteriole end of a capillary B. Ri
INSULIN Linear polymer of b-D-Glucose. Insulin is small-sized (25 - 35 residues) fructosan homopolysaccharide which is a reserve carbohydrate present in roots, tubers and
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd