Genetic recombination refers to the process by which two DNA  molecules exchange genetic information. The three types of genetic  recombination are crossing over, conservati â¦ ve site-specific  recombination and transpositional recombination.
This produces a crystal lattice, which is commonly known as 'ice'. Ice floats because it is about 9% less dense than liquid water. In other words, ice takes up about 9% more space than water, so a liter of ice weighs less than a liter water. The heavier water displaces the lighter ice, so ice floats to the top. One consequence of this is that lakes and rivers freeze from top to bottom, allowing fish to survive even when the surface of a lake has frozen over.
Ice floats on water because density of ice is less than water. In common language we can say ice floats on water because it is lighter than water. Any solid when place in a liquid buoyancy force that is equal to the weight of volume of liquid displaced by it. An object with density less than that of the liquid is able to displace volume of water that is less than volume of the object.... Ice floats on water because density of ice is less than water. In common language we can say ice floats on water because it is lighter than water.