What are produced in both the male and
female reproductive systems in humans?

Identify the main component f natural gas

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions

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.