EDIT: The 2nd theory Biology genotypes and explination(s) might not be 100% correct. It's been over a year since I took Biology in college and lets be honest, I've forgotten a lot about it and a lot about hwo exactly to do it .

Theory

 

Saiyan tails are directly linked with the Saiyan's body. In such a way whereas when a Saiyan is growing from childhood to adulthood, his tail is also in a "growing" state although it doesn't really appear to grow at all. But this, I mean of course that as long as a Saiyan is still growing up his tail is also able to grow back. This would explain why Gohan's tail continued to grow back (because he was a child still growing) and Vegeta's tail did not grow back at all (because he was already a full grown adult).

Theory #2

 

Dealing with Biology and the maths of inheretince, lets say that a full blooded Saiyan both male and female holds the genotype, for inhereiting a tail, TT. Using a Punnett Square (although not needed) obviously means that every offspring of 2 full blooded Saiyans will have a tail no matter what. Now if a Saiyan has sex with a non-Saiyan then the other species obviously does not have the tail trait. But for the sake of calculating something, lets just theoretically say that all other non-Saiyan species have the genotype tt. IF you then use a Punnett square using the genotypes TT and tt, then you figure that 100% of your offsrping will be Tt (homozygous dominant).

Quote:

 

So all in all there is no logical explination to why Gohan has a tail but Goten and Trunks do not. Your thoughts?

Mirage Sabrehaven

Mar 3 2009, 05:21 PM

As for Trunks, if you notice there is a massive gap between talking to future trunks and then suddenly he's 8 months old with Bulma and Vegeta is utterly annoyed by his very existence.

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In japan there were a good 20 episodes in ther to explain what happened. At this stage Bulma was running out of time to have children, she was nearly 40 years old. In japan they explained that she in fact used hair from a brush that Vegeta was using to make herself a test tube baby in the lab with the help of dr. briefs. Why he had no tail could be explained through when messing with trunks on a DNA level she might have altered it to prevent a tail having remembered how Goku was in the past how ever it's illogical.

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Considering the Trunks character was originally sketched out way back in DB to be a younger brother of Bulma, upon needing to extend DBZ and Akira Toriyama wanting to end DBZ right after the namek saga, he took a bunch of old scrapped characters and threw them into the mix with poorly thought out plots.

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This is were people get confused in GT, bulma was too old to have bra, which is why in the oh so crapolisous GT in japan Bra was actually a 100% clone of Bulma that was done by Bulma herself and Dr. Briefs. Because she aged like a normal person she was automatically adopted as a daughter and by this point the writers of GT had pussed up Vegeta I'm sure Akira Toriyama was getting sick just from seeing what they had done to his original characters.

Mirage Sabrehaven

Mar 3 2009, 05:21 PM

Heh this can easily be explained as the series goes on, please let me elaborate.

We all know ( most of us anyhow ) that Funimation chopped up DBZ to make the show suitable for day time TV or in other words PG. In Japan the whoe had plenty of nudity, not to mention blunt explanations for what was going on. I've an uncle who lives in Tokyo and when I was younger and there for the summer with his twin brats I discovered DB and DBZ long before it came to the english.

Goten's conception in the DBZ storyline at times doesn't make much sense considering the 9 months between conception and birth Goku was dead >_> In japan there is a "hidden" episode that claims goku was allowed to come to see Chichi upon request how ever there are dozens who say she became so lonely she turned to gohan and as sick as it sounds, it's not uncommon in the japanese culture for this to happen. How ever there is no evidence to support this other then the fact that the time line for his birth doesn't add up.

As for Trunks, if you notice there is a massive gap between talking to future trunks and then suddenly he's 8 months old with Bulma and Vegeta is utterly annoyed by his very existence. In japan there were a good 20 episodes in ther to explain what happened. At this stage Bulma was running out of time to have children, she was nearly 40 years old. In japan they explained that she in fact used hair from a brush that Vegeta was using to make herself a test tube baby in the lab with the help of dr. briefs. Why he had no tail could be explained through when messing with trunks on a DNA level she might have altered it to prevent a tail having remembered how Goku was in the past how ever it's illogical.

Considering the Trunks character was originally sketched out way back in DB to be a younger brother of Bulma, upon needing to extend DBZ and Akira Toriyama wanting to end DBZ right after the namek saga, he took a bunch of old scrapped characters and threw them into the mix with poorly thought out plots.

This is were people get confused in GT, bulma was too old to have bra, which is why in the oh so crapolisous GT in japan Bra was actually a 100% clone of Bulma that was done by Bulma herself and Dr. Briefs. Because she aged like a normal person she was automatically adopted as a daughter and by this point the writers of GT had pussed up Vegeta I'm sure Akira Toriyama was getting sick just from seeing what they had done to his original characters.

The best way to explain the tail thing, as DBZ progressed from the saiyan saga into the namek saga they had all new artists constantly coming in. It's what I would call lazy in the art world. they were always hiring and firing artists on the show that eventually drawing in tails just became forgotten about, which is why it's not talked about even in the later episodes.