Comparing the remains of modern species to fossils in search of common ancestry.

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.

The cluster of developing cells from conception until birth is called an

In meiosis ii during anaphase ii which structures separated homologous chromosomes or sister chromatids