Frameshift mutations result from the:a
substitution of one base pair for another.
b. substitution of more than one base pair.
c. insertion or deletion of one or two base pairs.
d. substitution of a stop codon for an amino acid-specifying codon.
e. substitution of a start codon for an amino acid codon.
c
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Predict what would happen if the pulmonary vein returned blood to the right atrium.
A. The expected cardiac cycle would occur-this is the normal path. B. Abnormally high levels of oxygenated blood would be pushed into the systemic circuit. C. Oxygenated blood would be kept in a circular path between the heart and lungs-it would not reach the systemic circuit. D. Abnormally high levels of deoxygenated blood would be pushed into the systemic circuit.
Recombinant chromatids have a mix of paternal and maternal alleles due to
A. random fertilization of the gametes. B. crossing-over between the linked genes. C. persistent linkage of genes on the chromatid. D. independent assortment. E. point mutations and gene aberrations from replication.
Ediacaran organisms lived during the _____ period.
A. Jurassic B. Silurian C. Devonian D. Cambrian E. Precambrian
Where do prevailing winds coming from the north and south collide?
A) at the intertropical convergence zone B) on the leeward side of a mountain C) on the windward side of a mountain D) within hurricanes