Sex differentiation mechanism, Biology

Assignment Help:

SEX DIFFERENTIATION MECHANISM -

Primitive gonads are identical in both sexes upto 6 weeks of gestation pressure.
This gonad is known as bipotential primordial gonad. It is differentiated into cortex and medulla.
Formation & devlopment of gonad is gonadogenesis.
In male devlopement of testes is controlled by Y-chromosome.
Testicular differentiation begins in the 7th week of gestation.
Differentiation of ovaries occur later in female in comparision to male or testes. It begins int he 11th or 12rh week of gestation under control of XX chromosomes.
Testes descend down in scrotum in 7th - 8th month. Ext. genitilia appear in male by the 5th month.

Related Discussions:- Sex differentiation mechanism

Common disease of goats, COMMON DISEASE OF GOATS - 1 . ANTHRAX ...

COMMON DISEASE OF GOATS - 1 . ANTHRAX 2 . FOOT & MOUTH DISEASE 3 . CONTAGIOUS PNEUMONIA - Characterized by pneumonia & pleurisy, cough, snee

Assume the effect on turnover, Explain two ways in which a changing climate...

Explain two ways in which a changing climate may impact the nutrient cycle. Predict the effect on turnover.

Diffusion, what is diffusion

what is diffusion

Describe the factors of biological evolution of humans, Although there are ...

Although there are differences in interpretation of the evidence, it is generally accepted that human biological evolution has not been a linear progression from one species to the

Nitrogen fixation, Nitrogen Fixation As we have said before, atmospher...

Nitrogen Fixation As we have said before, atmospheric nitrogen cannot be used by plants or animals. It has to be first fixed. The term nitrogen fixation refers to the oxidatio

Gastrointestinal hormones, Gastrointestinal Hormones The three main ma...

Gastrointestinal Hormones The three main mammalian gastrointestinal hormones are secretin, gastrin and cholecystokinin (CCK). There are several other hormones all peptides. Th

Financing of healthcare - Principles, Normal 0 false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Science, What is immunity

What is immunity

Show the artificial keys, Q. Show the Artificial Keys? These are based ...

Q. Show the Artificial Keys? These are based on the resemblances and differences of some prominent characters in the taxa. These are based on the phylogenetic relationship b

Enzymes, The Biological Catalysis Enzyme: Biological catalysis are cal...

The Biological Catalysis Enzyme: Biological catalysis are called enzyme. An enzyme can be defined as an organic substance that tremendously accelerates a chemical reaction w

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages