A force is a push or a pull that acts upon an object as a results of its interaction with another object. ... These two forces are called action and reaction forces and are the subject of Newton's third law of motion
Replication of the DNA and cell growth occur during the S-Phase of the cell cycle.
Cross over is the first way genes are shuffled to give rise to genetic diversity. Cross over takes place in sexual reproduction. The normal way that cross over occurs is chromosomes line up side by side and break off pieces of themselves, then trade those pieces with each other.
If they break the pieces at the same locus in the sequence of base pairs, the result is an exchange of genes called genetic recombination and it ensures that the daughter cells produced have a different genetic makeup from the parent cell and thus diversity occurs.
Gymnosperms do not have fruits or flowers and have an unenclosed or naked seeds on the surface of scales or leaves while Angiosperms have seeds that are enclosed within an ovary which is usually a fruit.
The natural water sample contains only one type of bacteria.
