What is a gene ? A. a series of amino acids
B. a segment of a dna molecule
C. a series of dna molecule
D. a segment of a protien

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.

What maintain homeostasis when a persons internal body temperature is 97.5°f

Which of the following is an abiotic factor in an ecosystem? a. bacteriab. airc. niched. grass(abiotic=non-living) me !