What causes air masses to move?
a difference in air pressure and temperature occurs.
weather conditions change rapidly to produce storms.
a collision takes place between two natural wind patterns.
long, narrow bands of wind blow in the upper atmosphere

Which statement best describes the relationship between an allele and a gene? question 1 options: an allele is a variation of a gene that can be expressed as a phenotype. an allele is the part of a gene that attaches to messenger rna molecules. an allele is a segment of a dna molecule that controls replication of a gene.

What is the next step in the process after a substrate enters the active site of an enzyme

If the rna molecule in a human has the nucleotide sequence of guu, this would the amino acid valine would be needed to make the protein. how would this cha process was occurring in a mushroom?