Leukemia is a cancer of white blood cells, or leukocytes. when chemotherapy alone is not successful, physicians
sometimes turn to bone marrow transplants.
a bone marrow transplant includes several steps. order these steps for a successful transplant to cure leukemia.

a. donor match located
b. a sample of donor bone marrow containing healthy stem cells is introduced into the patient's bloodstream
c. patient's existing bone marrow and abnormal leukocytes are killed using a combination of chemotherapy and
radiation
d. donor stem cells will migrate to patient's bone marrow and begin producing healthy leukocytes

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ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'