Answer:
One.
Explanation:
SDS (sodium dodecyl sulfate) PAGE ( Polyacrylamide gel electrophoresis) is the technique of the separation of the molecules on the basis of their molecular weight.
The beta-mercaptoethanol reduces and break the disulfide bonds present in the protein. When the protein X with the beta-mercaptoethanol is allowed to run on the gel, only one band will visible all the subunits have equal weight and will present at the same location on the gel.
Thus, the answer is one.
C. a molecule of two Nitrogen atoms because the chemical formula for Nitrogen is N2 and this means that is a molecule.
It teaches us that natural selection will not always produce genetic homogeneity; in some cases, selection preserves the genetic variation found in a population.
Answer: A. Genotype is inherited
Explanation: b,c are about phenotype
D, since the maternal parent is mentioned, one can assume a diploid, sexually reproducing species, in which case both parents’ genes contribute.