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.
Water Lily. Water lilies are floating aquatic, or water, plants. Their long roots are anchored deeply in the floor beneath the lilies. The leaves of the water lily floats on top of the water, allowing them to absorb sunlight.The chlorophyll in the leaves is only on the upper surface of the leaves, the part the sunlight will hit.Notice the overturned leaf in the picture is red, while the other leaves are green.heir long roots are anchored deeply in the floor beneath the lilies. The leaves of the water lily floats on top of the water, allowing them to absorb sunlight.