Eukaryotic chromosomes contain two general domains that relate to the degree of condensation. These two regions are . void of introns called heterochromatin and euchromatin uniform in the genetic information they contain separated by large stretches of repetitive DNA each void of typical protein-coding sequences of DNA

Wht happens as electrons in the electron transport chain release their energy

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.

Environmental differences within ecosystems are generally caused by