Each eukaryotic chromosome contains a large number of looped domains of 30-nm chromatin fibers attached to: a. an rna helix.
b. oligomers.
c. sines.
d. a transforming principle.
e. a protein scaffold.

What feature of cell theory is best demonstrated in the image

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.

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?