What are the two most important driving forces of metamorphism?

The two most important driving forces of metamorphism is high heat and pressure. Metamorphism is the changes in mineral, texture and chemical composition that occurs when a rock undergo conditions such pressures and temperatures that are different from those under which the rock was initially formed. Metamorphism occurs at high temperatures and pressures.

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

explanation:

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

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