Which of these lists is in the correct order of differentiation?
A) stem cells to plasma cells to B cells
B) B cells to stem cells to plasma cells
C) stem cells to B cells to plasma cells
D) B cells to plasma cells to stem cells
E) plasma cells to B cells to stem cells
Answer: C) stem cells to B cells to plasma cells
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An mRNA that contains the coding sequence for two or more structural genes is called a
A. polyintronic mRNA. B. polyextronic mRNA. C. polycistronic mRNA. D. polyexpressive mRNA. E. polyrepressor mRNA.
There are no mandatory screening programs for genetic defects such as PKU and galactosemia in
newborns Indicate whether the statement is true or false.
________ is the differential success of individuals in a population in response to environmental conditions
Fill in the blank(s) with correct word
What is a key feature of an open circulatory system?
a. No vessels carry the blood. b. Open-ended vessels carry the blood. c. Closed vessels carry the blood. d. No heart pumps the blood. e. Hemoglobin is carried in the blood.