During which phase of mitosis do the chromosomes head to opposite ends of the cell?
A. anaphase
interphase
B. metaphase
C. prophase
D. telophase

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.

In which situations is the principle of cross-cutting relationship useful in determining relative age?

Areal dna molecule consists of thousands of these pairs of nucleotides. what is the pairing arrangement of the nitrogen bases