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

Ammonotelism - excretion, Normal 0 false false false EN...

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

What is a centimorgan, What is a centimorgan? The Centimorgan, or The r...

What is a centimorgan? The Centimorgan, or The recombination unit, by convention is a distance between two linked genes that corresponds to 1% of recombination frequency of the

Define the factors effect the quantity of human milk, Define the factors ef...

Define the factors effect the Quantity of Human Milk? A large healthy baby who can vigorously suck will induce and obtain much more milk from its mother than a small, sickly or

Define body composition - geriatric nutrition, Define Body Composition - Ge...

Define Body Composition - Geriatric Nutrition? After 30 years of age 1-2% decline in lean body mass annually is observed. The total body water, bone mass and lean body mass

Integumentary system, skin derivates

skin derivates

Why energy requirement are different in different situations, Why do you th...

Why do you think the energy requirements are different in situations? Well the requirement is dependent on the ways in which the body spends energy. For example in the first c

Of which type of tissue is the heart made, Of which type of tissue is the h...

Of which type of tissue is the heart made? How is this tissue oxygenated and nutrified? The heart is made of striated cardiac muscle tissue. The heart muscle is known as the my

Symptoms of oesophagitis, Q. Symptoms of oesophagitis? The symptoms of ...

Q. Symptoms of oesophagitis? The symptoms of oesophagitis include heartburn or pyrosis, iron-deficiency anaemia due to chronic tissue bleeding, aspiration, which may cause coug

Explain the primary function of blood, Explain the primary function of bloo...

Explain the primary function of blood? The primary function of the blood to transport oxygen from the lungs to body tissues for interior respiration. The blood helps in maintai

Title.., egg of frog

egg of frog

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages