How did photosynthesis and cellular respiration affect Earth's atmosphere

16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.

Cells control gene expression at which steps