In cellular organisms, on average, about one nucleotide in every ____ is mistakenly substituted for another during each round of DNA replication
A. 100
B. 1000
C. 100,000
D. 1 billion
E. 10 billion
E
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A special capsule or chamber where a plant will make the first cells of the gametophyte generation is
called a ____.
a. vascular system b. protonema c. sporangium d. rhizome e. shoot system
What mechanism explains evolution by discussing variations in a population that allow it to match its environment?
a. Artificial selection b. Origin of species c. Beneficial adaptations d. Natural selection
Isotopes of an element are different from the most common standard form due to differences in the ____
a. atomic number b. position of the element in the periodic table c. number of neutrons in the nucleus d. number of protons in the nucleus e. size of the electron cloud
Eczema is an autoimmune disorder.
Answer the following statement true (T) or false (F)