Which of the Following Was Common to the Eruptions of Vesuvius

question 196

Multiple Choice

Which of the following was common to the eruptions of Vesuvius and Mount St.Helens?

• A)they are all composite volcanoes
• B)earthquakes before the eruption
• C)small eruptions of tephra
• D)pyroclastic flows
• E)All of these.

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Definitions:

Incomplete Dominance

A genetic phenomenon where the offspring's phenotype is a blend of the parents' phenotypes.

Codominance

A genetic scenario where two different alleles for a gene are both fully expressed in a heterozygous individual, leading to a dual phenotype.

Epistasis

An interaction between genes in which the effect of one gene is modified by one or several other genes, which can enhance, diminish, or suppress the expression of the first gene.

Pleiotropic Genes

Genes that have multiple effects on an organism's phenotype, influencing several different traits.