Okay, so start off with I wanna share you all with my theories about Bijuus CAN share DNA with the host and I will give you my reasons why I believe that. So I will simple start from beginning for example why Uchicha clan even exist.
WARNING THIS THEORY IS 100% MY THOUGHTS AND MAY NOT BE 100% CORRECT READ AT YOUR OWN RISK!
---Please show respect by not flame just because you don't find this true
---
So Yeah, Uchicha:
Uchicha is carrying the Sharingan. With gives the abilities to see the enemy moment, chakra flow and more stuffs. So how did they get the sharingan? Simple. The Juubi. As we all know that Juubi is the creator of the Sharingan.
So.
When Rikudou Sennin sealed Juubi inside of him it appear that somehow that Rikudou Sennin's DNA got mixed up with Juubi's DNA. We have heard about that Rikudou Sennin got the titel "God" for his power after he sealed Juubi. So if his DNA changed and started to tell his body to start producing "this way" instead of his "normal" way. This would mean that his body would make him capable to absorb tons of new Nature chakra (Because Juubi is using nature chakra)
But also the Sharingan DNA is "hidden" in his DNA somewhere. As we knows from his sons, his elder son (Sage of Six Paths "eyes") his eyes were almost the same but little bit different from his father.
(Beginning of Rinnegan + Sharingan ?)
and as the elder son's DNA would carry on trough the clan that he created (Uchicha) it would appear that Juubi's DNA is dominant with means that Juubi's DNA would pretty much push away must of Sage of Six Paths DNA, and create a new or start being a original DNA for itself. (Maybe one of the reason why Uchicha got better "spiritual Chakra" than Senju?) After generations and generations. It appear that Juubi's Sharingan is now Dominant. Every Uchicha got the same eyes (Sharingan with 3 dots) But also that Human's DNA from Juubi's DNA is still not same as Juubi's but only a copy of his DNA it would make their DNA from Juubi weaker, that's why they only carries max 3 dots instead of 10 (orignal Sharingan).
So I can totally see that Uchicha is carrying Juubi's eyes and spiritual abilities DNA.
They got 2 gifts as I care about from Juubi inform you guys with. The spiritual chakra and the eyes of Juubi.
Now let's take a look at Senju clan:
Senju's elder were sage of six paths younger son (Sage of six paths' "body") This appear that their body has the body regeneration and the healing abilities and also carrying more physical chakra. (As we know Chakra has 2 different chakras. Spiritual chakra and physical chakra (while Sennin mode require nature chakra + these other chakra types).)
As we learned from the story about Naruto having a ultimate healing power because of Kyuubi/Kurama. And as we know that Kurama is only a chakra portion of the orignal bijuu (Juubi) it would mean that Juubi is actually carrying healing power that was probably stronger than Rikudou Sennin's own body. Same with Senju clan Juubi's DNA carries on to next generations and add new kind of DNA to new children. As Uzimaki clan has a connection with Senju clan it would appear that they are sharing some small DNA with each others. This would give Naruto a chakra boost and body healing from Rikudou Sennin's side but as well he is carrying Kurama (part of Juubi) it also give him a stronger boost of Juubi's healing power.
So Senju/uzimaki clan got more physical chakra and body healing power from Rikodou Sennin and Juubi side.
The part with the 9 bijuus can share different abilities:
Juubi still have tons of mysteries that we don't know so far. But if we look at 9 tails' skin and 8 tails' skin it appear that 8 tails skin can actually get damage. But we have not seen Kurama's skin get damage one single time. From beginning when they threw the kunai daggers with explosions it still did not effect Kurama's skin. It appear that Kuramas is carrying Juubi's skin side. A skin that can't be damaged. But as well I believe that 8 tails is carrying something that Kurama does not have because 8 tails is another part of Juubi. So all different bijuus have different parts of Juubi. They have all different abilities (etc 4 tails can use Lava jutsus while Kurama can't)
The host of 4 tails could also use lava style no jutsus also, this is because 4 tails is sharing DNA with the host.
Now I have share with you guys that bijuus does actually mix their DNA with the host.
Now I have seen these threads about Hinata getting a child with Naruto, how would the child be?
Well my answer is probably :
The child of Naruto and Hinata would pretty much share the DNA from Senju and Juubi's healing rate power. Because of the healing power is more dominant than Hinata's eyes DNA from Rikoudou Sennin's side is. So the child would be more like Naruto's abilities side than Hinata's abilities side.
This is my book theory about Juubi and Rikudou developed a new DNA type to the children of the 5 different clans.
Hyuga - Carries a dominant DNA from Rikoudou Sennin.
Uzimaki - Carries a balanced DNA from both Rikudou Sennin and the Juubi.
Senju - Carries a balanced DNA from both Rikudou Sennin and the Juubi.
Uchicha - Carries a dominant DNA from Juubi.
Namikaze - Carries a dominant DNA from Juubi.
Now I KNOW that no one will read everything. Please just don't flame because you don't find this true but I have a good feeling that it has something to do about the different clans and abilities.
WARNING THIS THEORY IS 100% MY THOUGHTS AND MAY NOT BE 100% CORRECT READ AT YOUR OWN RISK!
---Please show respect by not flame just because you don't find this true
So Yeah, Uchicha:
Uchicha is carrying the Sharingan. With gives the abilities to see the enemy moment, chakra flow and more stuffs. So how did they get the sharingan? Simple. The Juubi. As we all know that Juubi is the creator of the Sharingan.
So.
When Rikudou Sennin sealed Juubi inside of him it appear that somehow that Rikudou Sennin's DNA got mixed up with Juubi's DNA. We have heard about that Rikudou Sennin got the titel "God" for his power after he sealed Juubi. So if his DNA changed and started to tell his body to start producing "this way" instead of his "normal" way. This would mean that his body would make him capable to absorb tons of new Nature chakra (Because Juubi is using nature chakra)
But also the Sharingan DNA is "hidden" in his DNA somewhere. As we knows from his sons, his elder son (Sage of Six Paths "eyes") his eyes were almost the same but little bit different from his father.
(Beginning of Rinnegan + Sharingan ?)
and as the elder son's DNA would carry on trough the clan that he created (Uchicha) it would appear that Juubi's DNA is dominant with means that Juubi's DNA would pretty much push away must of Sage of Six Paths DNA, and create a new or start being a original DNA for itself. (Maybe one of the reason why Uchicha got better "spiritual Chakra" than Senju?) After generations and generations. It appear that Juubi's Sharingan is now Dominant. Every Uchicha got the same eyes (Sharingan with 3 dots) But also that Human's DNA from Juubi's DNA is still not same as Juubi's but only a copy of his DNA it would make their DNA from Juubi weaker, that's why they only carries max 3 dots instead of 10 (orignal Sharingan).
So I can totally see that Uchicha is carrying Juubi's eyes and spiritual abilities DNA.
They got 2 gifts as I care about from Juubi inform you guys with. The spiritual chakra and the eyes of Juubi.
Now let's take a look at Senju clan:
Senju's elder were sage of six paths younger son (Sage of six paths' "body") This appear that their body has the body regeneration and the healing abilities and also carrying more physical chakra. (As we know Chakra has 2 different chakras. Spiritual chakra and physical chakra (while Sennin mode require nature chakra + these other chakra types).)
As we learned from the story about Naruto having a ultimate healing power because of Kyuubi/Kurama. And as we know that Kurama is only a chakra portion of the orignal bijuu (Juubi) it would mean that Juubi is actually carrying healing power that was probably stronger than Rikudou Sennin's own body. Same with Senju clan Juubi's DNA carries on to next generations and add new kind of DNA to new children. As Uzimaki clan has a connection with Senju clan it would appear that they are sharing some small DNA with each others. This would give Naruto a chakra boost and body healing from Rikudou Sennin's side but as well he is carrying Kurama (part of Juubi) it also give him a stronger boost of Juubi's healing power.
So Senju/uzimaki clan got more physical chakra and body healing power from Rikodou Sennin and Juubi side.
The part with the 9 bijuus can share different abilities:
Juubi still have tons of mysteries that we don't know so far. But if we look at 9 tails' skin and 8 tails' skin it appear that 8 tails skin can actually get damage. But we have not seen Kurama's skin get damage one single time. From beginning when they threw the kunai daggers with explosions it still did not effect Kurama's skin. It appear that Kuramas is carrying Juubi's skin side. A skin that can't be damaged. But as well I believe that 8 tails is carrying something that Kurama does not have because 8 tails is another part of Juubi. So all different bijuus have different parts of Juubi. They have all different abilities (etc 4 tails can use Lava jutsus while Kurama can't)
The host of 4 tails could also use lava style no jutsus also, this is because 4 tails is sharing DNA with the host.
Now I have share with you guys that bijuus does actually mix their DNA with the host.
Now I have seen these threads about Hinata getting a child with Naruto, how would the child be?
Well my answer is probably :
The child of Naruto and Hinata would pretty much share the DNA from Senju and Juubi's healing rate power. Because of the healing power is more dominant than Hinata's eyes DNA from Rikoudou Sennin's side is. So the child would be more like Naruto's abilities side than Hinata's abilities side.
This is my book theory about Juubi and Rikudou developed a new DNA type to the children of the 5 different clans.
Hyuga - Carries a dominant DNA from Rikoudou Sennin.
Uzimaki - Carries a balanced DNA from both Rikudou Sennin and the Juubi.
Senju - Carries a balanced DNA from both Rikudou Sennin and the Juubi.
Uchicha - Carries a dominant DNA from Juubi.
Namikaze - Carries a dominant DNA from Juubi.
Now I KNOW that no one will read everything. Please just don't flame because you don't find this true but I have a good feeling that it has something to do about the different clans and abilities.