What is a fixed allele? A. An allele that mutates with each generation

B. An allele that is found on many genes

C. An allele present in all members of a population

D. An allele that forbed by adaptive radiation

Blood stem cells may develop into any kind of human blood cells. what kind of stem cells are blood stem cells? a. multipotent stem cells o b. totipotent stem cells o c. pluripotent stem cells o d. unipotent stem cells