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

Explain the electron microscopy in taxonomy, Explain the Electron Microscop...

Explain the Electron Microscopy In Taxonomy? Morphological features that are easily observable with the naked eyes or with the stereomicroscopes permit quick identification an

Define calcium, Define Calcium, Phosphorus & Vitamin D required for Elderly...

Define Calcium, Phosphorus & Vitamin D required for Elderly? As mentioned earlier, due to the change in skeletal system, vitamin D and calcium needs increase with age. Bone min

Difference between translation and transcription, Q. What is the difference...

Q. What is the difference between translation and transcription? Transcription is the name given to the formation of DNA molecules from an open DNA chain used as a template, Tr

Regernation, Give ditail account on regernation in invertebrates and verta...

Give ditail account on regernation in invertebrates and vertabrites

What is the heterotrophic hypothesis on the origin of life, What is the het...

What is the heterotrophic hypothesis on the origin of life? As per to the heterotrophic hypothesis the first living beings were very simple heterotrophic organisms that is not

Inhibition model - models of succession, Inhibition Model - Models of Succe...

Inhibition Model - Models of Succession According to this model, succession is very heterogenous because the development at any one site depends on who gets there first. Speci

Gametes and developmental biology, Amphibian frog embryo

Amphibian frog embryo

What are the trends of the gametophyte, What are the trends of the gametoph...

What are the trends of the gametophyte in the evolution of plants? A tendency of the gametophyte evolution in plants has been towards the formation of gametes that are independ

State the term - neuroanatomists broadmann, State the term - Neuroanatomist...

State the term - Neuroanatomists Broadmann Neuroanatomists Broadmann used a combination of staining and microscopy to map the cytoarcitecture (cell structure\type) of human ce

Structural differences between roots and shoots, What are the structural di...

What are the structural differences between roots and shoots? What structures are unique to each?

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages