If you isolate a pancreatic beta cell and put it in the proper growth conditions, it will divide by mitosis and produce new beta cells, but it will not produce pancreatic alpha cells or pancreatic cells that release digestive enzymes. The pancreatic beta cell is
A. totipotent
B. impotent
C. unipotent
D. multipotent
E. pluripotent
C. unipotent
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Which of the following is a characteristic of Nanos protein?
A. Throughout the first seven nuclear divisions, Nanos concentration is higher in the anterior pole than in the posterior pole. B. Nanos represses Hunchback in the posterior pole. C. Nanos is a transcriptional activator of many segmentation genes. D. Nanos represses Caudal in the anterior pole.
Which of these groups is (are) flagellated protist(s)?
a. parabasalids b. euglenoids c. diplomonads d. kinetoplastids e. all of these
Which of the following only occrus in mitosis and NOT during meiosis II?
A) Synapsis and crossing over B) Haploid chromosomes line up at the equator C) Nuclei congaing the diploid number of chromosomes D) Four haploid daughter cells result
There are 92 chromosomes in a normal human cell undergoing mitosis at the anaphase stage. Indicate whether the statement is true or false