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.
objects with a density less than water floats. objects with a desity greater than water sink. CR#8 An object that floats in water has density GREATER than 1 g/mL. CR#1 A rocket taking off from earth needs much more fuel than the same rocket taking off from the moon. Explain why. CR#2 Why are astronauts floating above the earth in a space shuttle really not weightless? astronauts floating above the earth are not really not weightless because the gravitational force of earth decreases as the objects move away from the center of earth. But it still exists. CR#3 A person who cannot float in freshwater lake can float easily in the Great Salt Lake in Utah.