In the first generation of each experiment, how do the characteristics of the offspring compare to the parents' characteristics?

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?  

18. how do the cells in meiosis differ from the cells in mitosis?