Where are nematocysts located on a cnidarian's body?
a. on lid cells
b. in a cnidocyte
c. on the base of polyps
d. around the ectodermal outside of the body
e. on mesoderm cells
b
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A cell's DNA molecules contain its genetic material. DNA molecules contain patterns for the production of
a. proteins. b. amino acids. c. phosphates and sugars. d. four kinds of bases. e. proteins, amino acids, phosphates, sugars, and four kinds of bases.
Which disease results from deletion of the ?-globin gene cluster LCR?
A) sickle-cell disease B) mild ?-thalassemia C) severe ?-thalassemia D) mild ?-thalassemia E) severe ?-thalassemia
Which one of the following factors would not influence the productivity of an ocean community?
A. Fertilizer runoff B. The season of the year C. The presence of nitrogen-fixing cyanobacteria D. Levels of autotrophs E. The amount of rainfall
How can changes in genetic enhancers affect morphology?
What will be an ideal response?