How many codons are contained in the mrna that is produced by the normal dna in model 1

Before the can be observed by using a transmission electron microscope, cells are sliced into very thin sections. what disadvantage does this procedure present in the study of cellular parts

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

You are observing different types of cells in your science lab. one cell has many chloroplasts. what is the most likely function of this cell? a. energy production b. photosynthesis c. reproduction d. digestion