Answer: Phenylalanine has no polar group in the side chain
Explanation:
Unlike phenylanine with a nonpolar methyl benzyl group in its side chain, tryptothan and tyrosine on the other hand possesses a polar indole ring and hydroxyl group in their side chain respectively, which helps them form hydrogen bonds with water molecules.
Thus, both are less hydrophobic (water-hating) than phenylanine.
You are not posting the statement of the question but, If you are asking about the properties shared by RNA polymerase and the DNA polymerase, the correct ones are:
They both depend on a DNA sequence template.
Catalyzes phosphodiester bond formation.
Polymerizes nucleotides in a 5'-to-3' direction.
It has to complete the interphase and then it starts cell division when it enters the mitosis stage.
Answer:
Mitochondrial DNA is circular, so it doesn't shorten when it replicates unlike the rest.
Answer;
-Inactivation; limited
Differentiation requires inactivation of particular genes to produce populations with limited capabilities that form tissues.
Explanation;
-Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression.
-Gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a cell functions.
-Gene expression plays a critical role in the morphological changes that take place in a developing embryo and fetus and in the differentiation of stem cells to form specialized cells.
