A biology student has grown tomato plants for several years. Until now, he used an artificial fertilizer formulated for tomato plants. The fertilizer caused his plants to grow faster and taller than they grew in unfertilized soil. The student want to know whether using natural compost will cause his tomato plants to grow faster and taller than his artificial fertilizer.

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's the waste product of electrons and pyruvate combining in fermentation?  

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous