Bone marrow stem cells are sometimes used to treat certain blood cell diseases, such as
A) leukemia.
B) anemia.
C) cardiovascular disease.
D) hemophilia.
Answer: A
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Explain how systematists commonly identify ancestral and derived character states in the absence of fossil evidence
What will be an ideal response?
Which of the following breakthroughs in mycology was one of the first examples of biotechnology patenting?
a. The development of a reliable strain of brewer’s yeast b. The discovery of penicillin as an antibiotic c. The isolation of the immunosuppressant drug cyclosporin which reduces the risk of infection after an organ transplant d. The use of Penicillium to create the characteristic blue-veined Roquefort cheese from France
What is contained within the polar body?
A. corpus luteum B. egg cell C. primary follicle D. discarded chromosomes E. sperm cells
The only process that can lead to adaptations and directed genetic change of a population is:
a. natural selection. b. mutation. c. migration. d. genetic drift. e. inbreeding.