As far as I have learned, few are aware that there are at least 2 significant studies available regarding this subject.

Here is one:

Molecular cloning of RhD cDNA derived from a gene present in RhD- positive, but not RhD-negative individuals

Here is another one:

Molecular cloning and protein structure of a human blood group Rh polypeptide

The need to guess is gone. Ask/answer questions in the comment section.

ADDED:

It will take some time for me to gather and comprise all of the significant highlights from both studies for a video.

Until that day, I am leaving you with an older one:

https://www.youtube.com/watch?v=xqAUBs9eTCM&t=6s

For whatever reason, the topic is of great interest to many.

In the past I have answered the question numerous times.

Here is an older post of mine:

https://www.rhesusnegative.net/staynegative/can-rh-negative-blood-be-cloned-another-explanation/

Please don't hesitate to share your own findings and remember:

Blood cannot be cloned.

For more questions and answers regarding Rh negative blood and people, continue here:

https://www.datebytype.com/blogs/view/160/Are-you-Rh-negative