Phosphorous is required to synthesize the deoxyribonucleoside triphosphates used in dna replication. a geneticist grows some e. coli in a medium containing nonradioactive phosphorous for many generations. a sample of the bacteria is then transferred to a medium that contains a radioactive isotope of phosphorus (32p). samples of the bacteria are removed immediately after the transfer and after one and two rounds of replication. assume that newly synthesized dna contains 32p and the original dna contains nonradioactive phosphorous. what will be the distribution of radioactivity in the dna of the bacteria in each sample?

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.

Apuppy’s tendency to chew is inherited through which of the following? a. through learned behavior b.through genes c. through seasonal cycles d. through hibernation

Label the steps for protein synthesis in order, beginning with the first steponce the protein is made, the gene for a particular trait is expressedmrna joins the ribosome, and the anticodons from trna join mrna to form a chain ofamino acidsrna polymerase unzips dna and free rna nucleotides join dna to form mrnav a chain of amino acids is formed from peptide bonds, creating a proteinmrna is transported from the nucleus of the cell to the ribosomes of the cell.