What does the basic structure of a plant reflect?

The idea of spontaneous generation was disproved by in a experiment involving jars of meat

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.

The transport tubes for food coming down the plants are called?