Thank you for your question!
Short answer: According to science, it is possible. (How do you like my citation of science for a change…)
First, religions have described “immaculate births,” take a look at this link written by ‘sincerely yours’ sometime ago.
Then, we have a “nice” experiment by science with “Dolly,” the “most famous sheep in history.”
and to close the paragraphs of “evidence,” here an article about “sexless reproduction in human beings” according to an Indian geneticist.
Now, we have the versions of religion, which have been around for centuries and the versions of science from the last couple of years… 🙂 Who do you believe?
Baba says that it happens through “the power of yoga.” We need to be aware that this may be literal or may not. (For Baba’s audience had a child like mentality back then and also the traditional Indian modesty, when it comes to “sexuality” which makes talks about sexuality sort of a taboo.)
For a Brahmin soul, that shouldn’t be a worry now… for things will happen automatically without us figuring that stuff out now, specially since practicing celibacy at this time.