Which of the following is a nucleotide found in RNA?" 1. deoxyribose + phosphate group + cytosine
o +
2. ribose + phosphate group + thymine
o
3. ribose + phosphate group + uracil
4. deoxyribose + phosphate group + uracil

Choose the best definition of allele. a. one of several possible versions of a gene, which each produce a different phenotype b. an organism that's purebred for a given trait c. the process of fertilizing a plant with pollen from another plant d. a set of genes that are located on the same chromosome and so are tightly linked