Καμμένα...!!

[Thmmy.gr portal]

  Thmmy.gr portal
   Forum
   Downloads
   Ενεργ. Λογαριασμού
   Επικοινωνία
  
  Χρήσιμα links
   Σελίδα τμήματος
   Βιβλιοθήκη Τμήματος
   Elearning
   Φοιτητικά fora
   Πρόγραμμα Λέσχης
   Πρακτική Άσκηση
   Ηλεκτρονική Εξυπηρέτηση Φοιτητών
   Διανομή Συγγραμμάτων
   Ψηφιακό Καταθετήριο Διπλωματικών
   Πληροφορίες Καθηγητών
   Instagram @thmmy.gr
   mTHMMY
  
  Φοιτητικές Ομάδες
   ACM
   Aristurtle
   ART
   ASAT
   BEAM
   BEST Thessaloniki
   EESTEC LC Thessaloniki
   EΜΒ Auth
   IAESTE Thessaloniki
   IEEE φοιτητικό παράρτημα ΑΠΘ
   SpaceDot
   VROOM
   Panther
  

THMMY.gr Web

Helios_MultiScribbles2SMF Default ThemeSMFone_Blue

[Ανεβάζετε τα θέματα των εξετάσεων στον τομέα Downloads]

Είσαι πρωτοετής;... Καλώς ήρθες! Μπορείς να βρεις πληροφορίες εδώ. Βοήθεια για τους καινούργιους μέσω χάρτη.

Κατεβάστε εδώ το Android Application για εύκολη πρόσβαση στο forum.

Ανεβάζετε τα θέματα των εξετάσεων στον τομέα Downloads με προσοχή στα ονόματα των αρχείων!

[Δείτε περισσότερα εδώ...]

Συμβουλές καλής χρήσης του φόρουμ: Youtube embed code and links, Shoutbox, Notify, ...

Δείτε περισσότερα εδώ...

[Just Me]

Why 9 is so afraid of 7
Because 7 8 9

sent from mTHMMY  

[The Audacious AI]

but why did 7 eat 9?

Because you're supposed to eat 3 squared meals a day.

[Just Me]

but why did 7 eat 9?

Because you're supposed to eat 3 squared meals a day.

[Katarameno]

••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
Αρης
@arisasimak

Έκλαψα



https://twitter.com/arisasimak/status/1345367078484795395
••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••

[ori0ngel]

A pig without 3.14 is 9.8
 

[Katarameno]

Τζερμποα
@kagouriki

- Να φέρουμε να ενώσουμε άλλο ένα τραπέζι;
- Όχι μωρέ, λίγο θα τσιμπήσουμε με το τσίπουρο

Μισή ώρα αργότερα:



https://twitter.com/kagouriki/status/1395007108974841862

(δεν ήξερα που να το κολλήσω... κολλάει δε κολλάει ο Μ*****ς το κολλάει)

[Katarameno]

ΜΗΔΕΙΑ ΣΑΓΑΝΑΚΙ
@mhdeiasaganaki · Sep 18, 2016

-Πέθανε εξ αιτίας ενός θανάσιμου χτυπήματος στο κεφάλι.
-Τί χτυπήματος;
-Θανάσιμου.
-Γιώργο μου.

https://twitter.com/mhdeiasaganaki/status/777277476733063168
••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••

Most viewed
This animal has survived for centuries without having sex
-Ηλεκτρολόγος Μηχανικός, πάμε παρακάτω  

••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
Scientists have solved the mystery of why these asexual animals haven't gone extinct



By Rosie Frost  •  Updated: 23/09/2021
A tiny beetle mite species, just one-fifth of a millimetre in size, has helped scientists prove that animals can survive for a very long time without having sex.

The Oppiella nova is an all-female species and represents something that scientists call an “ancient asexual scandal”. They couldn’t figure out how the beetles were managing to reproduce without having intercourse, so assumed they must be hiding away from the prying eyes of biologists.

“There could be, for example, some kind of ‘cryptic’ sexual exchange that is not known. Or not yet know,” says first author of the study Dr Alexander Brandt.

“For example, very rarely a reproductive male could be produced after all - possibly even ‘by accident’.”

The long term survival of animal species without sexual reproduction was thought to be practically impossible - until now.

What scientists at the Universities of Cologne and Göttingen discovered is that the Oppiella nova beetle mite has survived for thousands - maybe even millions - of years without having sex.

This animal can clone itself instead of reproducing
Normally, there is a big evolutionary advantage to having two parents. In animals with two sets of chromosomes, including humans, sex makes sure that our genetics get ‘mixed’ providing diversity.

It means, on average, the two sets of genetic information we have remain very similar but there are differences in individuals. This genetic diversity is what allows most life on earth to adapt over time, evolving characteristics that best suit our environments.

But this ‘mixing’ doesn’t happen in organisms that reproduce asexually. Despite producing what are essentially clones of themselves, they are still able to introduce genetic variation and adapt to their environments in a different way.

Despite producing what are essentially clones of themselves, they are still able to introduce genetic variation in a different way.
The two copies of their genetic information accumulate separate mutations, evolving completely independently. This is something called the Meselon effect and is only found in species that only reproduce asexually.

“'That may sound simple. But in practice, the Meselson effect has never been conclusively demonstrated in animals - until now,” says Prof. Tanja Schwander at the Department of Ecology and Evolution, University of Lausanne.

The survival of a species for this long without sexual reproduction is rare but as the study showed, not impossible.

The team of biologists and zoologists still think the tiny beetle could have some surprises in store for them when it comes to understanding how evolution works without sex.

https://www.euronews.com/green/2021/09/23/scientists-have-solved-the-mystery-of-why-these-asexual-animals-haven-t-gone-extinct
••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••

[Katarameno]

Which one is the red ball?  1,2,3

https://x.com/gunsnrosesgirl3/status/1794295302243119418

[Godat]

Πάρκο με ρεμπέτες δεινόσαυρους.

Τζουράς-sic park

sent from mTHMMY