The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms. When a neutral molecule has a positive area at one end and a negative area at the other, it is a polar molecule.
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If the father had the gene BB (purebred & not carrying colourblind allele), then the answer will be a). All of their children will have normal vision with half of them carrying the colourblind allele.
If the father had the gene Bb (hydrid & carrying colourblind allele), then the answer will be d). 3/4 of their children would have normal vision whilst the last quarter would have colourblind males. This is due to them having to receive one colourblind allele from their mother on the X chromosome & one colourblind allele from their father on the Y chromosome.
Answer;
-Isotonic solution
Explanation;
-An isotonic solution refers to two solutions having the same osmotic pressure across a semipermeable membrane. This state allows for the free movement of water across the membrane without changing the concentration of solutes on either side.
-An isotonic solution has an equal concentration of water and solutes. If a cell is placed in an isotonic solution, the cell will neither shrink nor swell. The water will move into and out of the cell at the same rate. In the case of a red blood cell, isotonic conditions are ideal, and the body has homeostatic (stability-maintaining) systems to ensure these conditions stay constant.