Which part of the eye changes shape in order to regulate how much light enters?

Dna is colied into chromosomes in a cell

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.

An organism has the following traits multicellular cant photosynthesize has a skull. wht kingdom does this organism most likely belong too?