Why did sectionalism become very tense in the late 1840s

Sectionalism became very tensed in the late 1940s because of the separation of the North and the South because of the slavery. People in the North were focusing on industrializing, urbanizing, and building factories while the people from the South concentrated in agriculture. The Southerners was claiming that the North's factories weren't treating everyone fairly and lead into a war.

i do

Explanation:

Cystic fibrosis results when patients inherit two copies of a recessive CFTR gene.  The recessive CFTR genes produce a protein which causes mucus to build up in parts of the body. Having just one dominant CFTR gene allows the body to produce a normal protein. Individuals with one dominant CFTR gene have no cystic fibrosis symptoms. Which question would BEST help researchers identify a potential treatment for cystic fibrosis?

Question 16 options:

d. Can DNA fingerprinting identify which individuals have cystic fibrosis and which do not?

a. Can recessive CFTR genes recombine with bacterial DNA to be cloned?

b. Can a dominant CFTR gene be inserted in patients’ cells using a virus?

c. Can stem cells be used to change the recessive CFTR genes into dominant CFTR genes in patients’ cells?