The father wants the child to become a doctor. He is planning to create such an environment around the child such that the child starts thinking that she must become a doctor until she actually does.
I think this is very unwise. Not only is it disrespecting her as a person, but it is also setting her up for hardship and possibly failure. Just as with reading, your daughter's interest in biology can be fostered because you love biology. And she may well major in biology and go into pharmacology or mycology (the study of fungi). But if her self worth (why else must be a doctor?) is tied to being one thing, yes, maybe she will become a doctor but there's absolutely no guarantee that she will be happy and a high probability that she will not. Medicine is a calling for most, a calculated step to success for others. But for anyone to be really happy in medicine, they have to love all kinds of things: biology, biochemistry, helping people, lifelong learning, effective communication. They need to be comfortable delaying gratification (for a long time), working very hard in school and many years afterwards, solving difficult problems, and be able to live with the responsibility of having people's lives in their hands and losing those lives as well.
Some of this holds true for other fields you would "pick" for her as well.
[A]re people born with some dedicated interests or it is possible to thrust a different interest on them such they eventually become interested in that interest?
People are born with personality traits. Hopefully they are exposed to a broad range of things and discover more in school, through friends, etc. What they love depends on what they find most interesting, and there's not even always a living to be made in that field.
Please consider building your daughter's character (including resilience, a work ethic, a moral compass, etc.), and letting her pick the field of study she desires.
Ours was a two doctor-parents home. We never encouraged any of our children to go into medicine, and indeed often tried to talk the one child who always (and only ever) wanted to be a doctor out of it. We exposed them to a broad range of subjects and involved ourselves in their education and reading. But they had free time and free choices. Their career choices were a pleasant surprise, even the "doctor's" choice.