withdrawing from courses??

<p>just curious about whether or not withdrawals have a negative affect on admissions chances? last semester i had 2 (pre-calc and history of world civs) because of my work schedule...but i have a A in pre-calc now and i'm taking the history over the summer...now this semester i have a miserable teacher for general bio 2 and i can't imagine getting above a B-/C+ in her class....would i be better off taking the lower grade or withdrawing? my gpa right now is a 3.8... w/the C it would fall quite a bit. also, i'm going to be majoring in physics so i will be taking advanced physics courses...if i withdraw from bio 2 but complete physics 201, 202 and 301 will it really make that much of a difference?</p>