I am a 1st year Bachelor of science student from India, from a well reputed institution, and I want to take physics as my major. I am very passionate about it, and a few of the senior professors continually discuss physics with me and let's say I have a good rapport with them.
The system in my school is that one studies for 2 years, all 4 subjects- Math, Physics, Chemistry and Biology. After that in one's 3rd year, they get to choose their majors, after which their masters will get combined with their bs to give a combined degree including an ms thesis.
My situation is, I have failed this semester's biology course (math and physics are all A+ for the last two semesters, and hopefully maintained like this), and the reason is that I simply didn't maintain proper attendance numbers. This will be a backlog for me and I can only clear this backlog in my 4th semester, where I will be graded for this course only on that semester (so in this semester in one's report card, it counts as an F, till the 4th semester, and in the final report card, it will show in two places, one as an F this sem, and once in the 4th sem).
My question is, will this have an affect on my future graduate (PhD) applications to either abroad places or places within India, like TIFR or Harish-Chandra institute, and how much leeway do I have in terms of explaining away this black mark on my card? I have, or at any rate should have by the end of my 5th year here, a bunch of professors who will vouch for me, but I have heard from many sources that most places, especially abroad use grades as a first screening device and this black mark I feel will have a significant negative effect. It would be nice if someone could also explain the process and how one could resolve this and make it not as bad as it is.