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

Chemical stress, Chemical Stress Survival of cells is dependent on car...

Chemical Stress Survival of cells is dependent on carrying out of a set of chemical reactions (metabolic reactions) in a particular order. This results in a net gain in mass a

Importance of mendelism, IMPORTANCE OF MENDELISM 1 . Improvement...

IMPORTANCE OF MENDELISM 1 . Improvement of Plants Hybridization is used for obtaining improved varieties of plants. This process results in combinations of desirable

What do you understand by exoskeleton, What do you understand by Exoskeleto...

What do you understand by Exoskeleton. Supporting structures of skeleton not surrounded by the body. Endoskeletal elements are secreted by an underlying epidermis and one side

Define absolute food safety and relative food safety, 'Absolute food safe...

'Absolute food safety' is the assurance that damage or injury from use of a substance is impossible. Normal 0 false false false EN-US X-NON

What is herbicide tolerant crops in evolutionary, Evolutionary ...

Evolutionary Herbicide tolerant crops (HTC) Increased use of herbicide can result in increase in development of weed resistance to that herbicide either through

Anatomy, what are the names of twelve cranial nerves

what are the names of twelve cranial nerves

Summer stratification - thermal stratification, Summer Stratification - The...

Summer Stratification - Thermal stratification Thermal stratification is fairly pronounced during the summer seasons in most lakes of the temperate (cold) regions but is rare

Define petri plates - food microbiology, Define Petri Plates - Food Microbi...

Define Petri Plates - Food Microbiology? Petri plates were discovered by Richard Petri in Ninteenth century (1887). It consists of two dishes. Look at the Figure which illustra

Importance of nutritional interaction, Importance of nutritional interact...

Importance of nutritional interaction :- Now being realized. Some nutrients are antagonistic to each other whereas others act synergistically. Examples of uniquely related

Female reproductive disorders-hydro allantois, Hydrops allantois (Hydro all...

Hydrops allantois (Hydro allantois) This condition is uncommonly seen in dairy cattle and buffaloes. Accumulation of excessive allantoic fluid may be progressive after mid ges

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages