This helps slightly immobilize the outer surface of the membrane and make it less soluble to very small water-soluble molecules that could otherwise pass through more easily. Without cholesterol, cell membranes would be too fluid, not firm enough, and too permeable to some molecules. (www.cholesterol-and-health.com/Cholesterol-Cell-Membrane.html)
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Child type o => genotype oo
mother type A => genotype AA or Ao
AA would not have given birth to type o (genotype oo), mother must have genotype Ao.
So father must contribute to the other o allele, so possible genotypes are:
Ao, Bo or oo.
Therefore the father's possible phenotypes are type A, type B or type O.
Answer:
In biology, the process by which a cell makes proteins using the genetic information carried in messenger RNA (mRNA). The mRNA is made by copying DNA, and the information it carries tells the cell how to link amino acids together to form proteins.
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Cartilage is a flexible connective tissue that keeps joint motion fluid by coating the surfaces of the bones in our joints and by cushioning bones against impact. It is not as rigid as bone, but is stiffer and less flexible than muscle tissue.
