1 This will occur only if the egg has been united with a male sperm cell (fertilized). 2  A chick will hatch from a fertile egg if the egg is incubated at 100.5 degrees F for 21 days. 3  You can tell if an egg is fertile by candling and identifying a mass or small spot in the egg.
I. TYPES OF CELLS GROWN IN CULTURE. Tissue culture is often a generic term that refers to both organ culture and cell culture and the terms are often used interchangeably. Cell cultures are derived from either primary tissue explants or cell suspensions.Primary cell cultures typically will have a finite life span in culture whereas continuous cell lines are, by definition, abnormal and are often transformed cell lines.ell cultures are derived from either primary tissue explants or cell suspensions. Primary cell cultures typically will have a finite life span in culture whereas continuous cell lines are, by definition, abnormal and are often transformed cell lines.
A pure culture is one in which only one kind of microbial species is found whereas in mixed culture two or more microbial species formed colonies. pure culture is a culture consisting of only one strain. YOU CAN OBTAIN A PURE CULTURE BY PICKING OUT A SMALL PORTION OF THE MIXED CULTURE(which will form the pure culture) AND GROWING THEM ON A NEW CULTURE MEDIA.