Curiozitati

[juicypussy]

Cocosul are pula?

[Vizitator deliaro]

Cocosul are pula?

are creastă

[laurentiuumf]

Nu, cocosul nu are pula. 

 

New research sheds light on why some birds have lost their penises over the course of evolution.

Land fowl, such as chickens, have normally developing penises as early embryos, but only have rudimentary organs as adults.

A study in Current Biology shows that these birds initiate a genetic "programme" during development that stops the budding penises from growing.

The loss of the organ could have given hens more control over reproduction.

Co-author Dr Martin Cohn, from the University of Florida in Gainesville, said: "Our discovery shows that reduction of the penis during bird evolution occurred by activation of a normal mechanism of programmed cell death in a new location, the tip of the emerging penis."

The team discovered that a gene called Bmp4 plays a critical role in this process. In chicken development, Bmp4 switches on and the birds' developing male genitals shrink away.

In ducks and emus, which retain their penises, the gene stays switched off and the organs continue to grow.

Chicken and egg

Given the absence of a penis, chickens and other land fowl have had to develop a method of fertilisation that does not rely on penetration.

Both male and female birds have an orifice known as a cloaca. When the cloacae are touched together, sperm is transferred to the female reproductive tract. This is known as a "cloacal kiss".
 

Lead author Ana Herrera, also from the University of Florida, speculated that the loss could leave hens with greater control over their reproductive lives.

The study could also provide clues to other evolutionary conundrums, such as how snakes lost their limbs.

https://www.bbc.com/news/science-environment-22803344 

 

are creastă

Creasta are alte roluri, draga noastra Deliaro...  :console  Tehnic vorbind, si gaina are creasta, doar ca mai mica  (strict functionala din alte puncte de vedere, am putea spune?). 

[george_us30]

Nu, cocosul nu are pula.

 

https://www.youtube.com/watch?v=FqYBYU7IJ6E

New research sheds light on why some birds have lost their penises over the course of evolution.

Land fowl, such as chickens, have normally developing penises as early embryos, but only have rudimentary organs as adults.

A study in Current Biology shows that these birds initiate a genetic "programme" during development that stops the budding penises from growing.

The loss of the organ could have given hens more control over reproduction.

Co-author Dr Martin Cohn, from the University of Florida in Gainesville, said: "Our discovery shows that reduction of the penis during bird evolution occurred by activation of a normal mechanism of programmed cell death in a new location, the tip of the emerging penis."

The team discovered that a gene called Bmp4 plays a critical role in this process. In chicken development, Bmp4 switches on and the birds' developing male genitals shrink away.

In ducks and emus, which retain their penises, the gene stays switched off and the organs continue to grow. Chicken and egg

Given the absence of a penis, chickens and other land fowl have had to develop a method of fertilisation that does not rely on penetration.

 

Both male and female birds have an orifice known as a cloaca. When the cloacae are touched together, sperm is transferred to the female reproductive tract. This is known as a "cloacal kiss".

Lead author Ana Herrera, also from the University of Florida, speculated that the loss could leave hens with greater control over their reproductive lives.

The study could also provide clues to other evolutionary conundrums, such as how snakes lost their limbs.

 

https://www.bbc.com/news/science-environment-22803344

 

Creasta are alte roluri, draga noastra Deliaro... :console Tehnic vorbind, si gaina are creasta, doar ca mai mica (strict functionala din alte puncte de vedere, am putea spune?).

Sa-mi bag poola, ai ceva timp liber :))

[peitho]

Rața Oxyura Vittata - Oxyura vittata, o specie de rate, are un penis de 42, 5 cm, la o lungime a corpului de 20-25 cm, adică raportul este de 2:1. Echivalentul uman ar fi un bărbat cu un penis de 3.5 m!

[picon]

Sa-mi bag poola, ai ceva timp liber :))

Între vizită și contravizită.

[ultravox]

Între vizită și contravizită.

Exact astea o sa le ai tu la Rahova. In curand.

Pastrav eviscerat ce esti !

[picon]

Exact astea o sa le ai tu la Rahova. In curand.

Pastrav eviscerat ce esti !

Mă plictisești!

Culcă-te!

[ultravox]

Mă plictisești!

Culcă-te!

Ia şi suge pula, şi-ţi trece plictiseala, morţii m-tii de puşcăriaş

[picon]

Ia şi suge pula, şi-ţi trece plictiseala, morţii m-tii de puşcăriaş

Iar ai ieșit din ghenă, boschetarule? Mai schimbă în p.m. placa aia, că s-a tocit, toci-mi-aș pula-n gâții tăi!

[ultravox]

Iar ai ieșit din ghenă, boschetarule? Mai schimbă în p.m. placa aia, că s-a tocit, toci-mi-aș pula-n gâții tăi!

Te bag direct în pizda mă-tii, aurolac jegos care eşti. Îţi bag pâlnia pă gât şi mă piş pă tine până mori, grijania mă-tii de scârbă ordinară.

[picon]

Te bag direct în pizda mă-tii, aurolac jegos care eşti. Îţi bag pâlnia pă gât şi mă piş pă tine până mori, grijania mă-tii de scârbă ordinară.

http://bufteni.ro/wp-content/uploads/2016/08/calmeaza-te-durex-isi-cere-scuze-pentru-nasterea-ta.jpg.jpg

[ultravox]

http://bufteni.ro/wp-content/uploads/2016/08/calmeaza-te-durex-isi-cere-scuze-pentru-nasterea-ta.jpg.jpg

Rămâne la fel. Tot în pizdele mă-tii te bag, cu anexele corespunzătoare, până te sufoci.

Băbălăule !

[picon]

Rămâne la fel. Tot în pizdele mă-tii te bag, cu anexele corespunzătoare, până te sufoci.

Băbălăule !

http://nostres.ucoz.ro/_ph/1/2/60624903.jpg

[ultravox]

http://nostres.ucoz.ro/_ph/1/2/60624903.jpg

Marş în pizda mă-tii !

[picon]

Marş în pizda mă-tii !

https://akphoto1.ask.fm/730/975/877/80003024-1rb0oan-fcb7h5heeg4hie5/original/avatar.jpg