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 life cycle of nitrogen, Explain the life cycle of Nitrogen ? ...

Explain the life cycle of Nitrogen ? Nitrogen cycle: Along with carbon, hydrogen, and oxygen, nitrogen is one of the most common elements that form biological molecules. Nitr

Describe the external features of the heart, Question 1 Describe the exter...

Question 1 Describe the external features of the heart. Add a note on circulation of blood within the heart Question 2 Discuss the major joints of thorax and pelvis Quest

Explain dna or rna segment, DNA or RNA segment tagged with a radioactive mo...

DNA or RNA segment tagged with a radioactive molecule is called: 1. Vector 2. Probe 3. Clone 4. Plasmid Probe

Which animals maintain constant body temperature?, Which of the below terms...

Which of the below terms is used to describe animals which maintain a constant body temperature by producing heat by metabolic oxidations (muscle contractions) and losing excess he

Auxins - plant growth substances, Auxins - Plant Growth Substances Jul...

Auxins - Plant Growth Substances Julius Sachs (1882) first suggested on the basis of his observations that there are special substances for forming roots and some special subs

Explain the transcription and the replication processes, What are similarit...

What are similarities and differences among the transcription process and the replication processes? A DNA polynucleotide chain serves as a template in replication (DNA duplica

Explain proteins as carriers, Explain Proteins as carriers? A large var...

Explain Proteins as carriers? A large variety of compounds are carried in the blood between tissues and organs of the body. Some of the compounds require specific protein for t

#title., poor metabolism phenotype will have

poor metabolism phenotype will have

What are the sign of horner''s syndrome, What are the sign of Horner's synd...

What are the sign of Horner's syndrome? 1. Miosis, 2. ptosis, 3. enophthalmos, 4. anhidrosis and 5. heterochrome iridis.

Define the bioavailability of vitamin k, Define the Bioavailability of Vita...

Define the Bioavailability of Vitamin K? Very little is known about the bioavailability of the K vitamins from different foods. It has been estimated that the efficiency of ab

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages