Biome which is dominated by grass and in which trees are rare

List two modern organisms that have pentameral symmetry

Rue or false siblings look simila rbecause they each have some traits of their parents.

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.