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

Automated dna sequencing, Automated DNA sequencing is now common place whic...

Automated DNA sequencing is now common place which is based on the chain termination method but using a fluorescent dye attached to an oligonucleotide primer instead of using radio

Indications for gingival curettage - endodontic surgery, Indications for Gi...

Indications for Gingival Curettage - Endodontic Surgery a) Persistent periradicular pathosis following endodontic treatment, b) Periradicular lesion that enlarges after endo

What are the major organic molecules for living beings, Q. What are the maj...

Q. What are the major significant organic molecules for living beings? There are many types of organic molecules that are important for the living beings. Particularly importan

What is the principle of the design, In designing an experiment to find out...

In designing an experiment to find out whether light is required for photosynthesis (a) what is the principle of the design (b) what control would you use?

Phylum protozoa, how many species of protozoan?

how many species of protozoan?

What do you mean by gametogenesis, Q. What is the kind of cell division tha...

Q. What is the kind of cell division that allows sexual reproduction? What is gametogenesis? Meiosis is the kind of cell division that permits sexual reproduction since it redu

Fidelity - synthetic characters, Fidelity - Synthetic Characters Fidel...

Fidelity - Synthetic Characters Fidelity refers to the degree to which a species is restricted in its occurrence to a particular kind of community. The species with low fideli

Individuals with tyrosinenmia, Individuals with tyrosinenmia have food patt...

Individuals with tyrosinenmia have food patterns very similar to the one for PKU discussed above. PKU is more common than tyrosinemia. Foods that are high in tyrosine and phenylala

Reed-swamp stage - hydrarch, Reed-Swamp Stage - Hydrarch This stage is...

Reed-Swamp Stage - Hydrarch This stage is also known as amphibious stage, as the plants of the community are rooted but most parts of their shoots remain exposed to air. Speci

Explain the potassium conductance, In a neuron at rest, the membrane A....

In a neuron at rest, the membrane A. voltage will be less than zero. B. sodium conductance is greater than the membrane potassium conductance. C. voltage is less than the

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages