Natural selection acts directly on the genotype of an organism
_______ Indicate whether the statement is true or false.
F, phenotype
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Stop codons are also called ________ codons
A) nonsense B) release factor C) degeneracy D) conversion
Explain why organisms undergoing rapid evolutionary change often contain relatively large numbers of mobile DNA elements, whereas once organisms settle into a stable evolutionary niche, most of these mobile elements are lost
What will be an ideal response?
Explain how a polar molecule, such as water, can have a difference in electrical charge but is also electrically neutral
What will be an ideal response?
The buildup of mucus and blockage of airways in pertussis is due to
A. endotoxin. B. lipopolysaccharide. C. toxins that destroy the ciliated cells of the respiratory tract. D. Pseudomonas aeruginosa. E. the presence of a capsule.