DNA in the nucleus winds around proteins called
A) histones.
B) karyosomes.
C) ribosomes.
D) proteasomes.
A) histones.
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Suppose an Rh- mother gives birth to an Rh- baby. Is there a danger of hemolytic disease of the newborn developing during a subsequent pregnancy? Why or why not?
What will be an ideal response?
When two different forms of a virus infect the same cell, the host cell may manufacture viral particles from both viruses to reassemble them into a new form of virus. This process is called ________.
A. antigenic shift B. artificial selection C. antigenic drift D. the founder effect
Plant cells, unlike animal cells, are characterized by the presence of a ________
A) cell wall and a contractile vacuole B) cell wall and a central vacuole C) nucleus and a cell wall D) nucleus and a contractile vacuole
One method of protecting the genetic identity of a population is the inability of sperm to fertilize eggs of a different species. This isolating mechanism is called:
A) temporal isolation. B) ecological isolation. C) behavioral isolation. D) gametic isolation.