Mutations cause changes in the genetic code that lead to genetic variation and the potential to develop disease. Gene mutations can be generally categorized into two types: point mutations and base-pair insertions or deletions. Point mutations are the most common type of gene mutation.
OVERNIGHTS: The Difference Between Night and Day. By. Isabelle Fox, Ph. D. Daytime gives us sunlight Nighttime brings on darkness. Daytime is familiar Nighttime is strange. Day time is for activity Nighttime is for comforting. Daytime is for learning Nighttime is for dreaming.
For most of here on planet Earth, sunrise, sunset, and cycle of day and night (aka. the diurnal cycle) is just a simple fact of life. As a result of seasonal changes that happen with every passing year, the length of day and night can vary â and be either longer or shorter â by just a few hours. But in some regions of the world, this cycle is completely different.