What are the 9 major phylum of animals. how many are invertebrates

Each trait of a plant is determined a. an allele b. one gene c. a pair of genes d. one dominant gene

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.

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?