Transmitting Information As Mendel's work had shown, genes are transmitted from one generation to the next. Therefore, DNA molecules must be carefully sorted and passed along during cell division. Such careful sorting is especially important during the formation of reproductive cells in meiosis. Remember, the chromosomes of eukaryotic cells contain genes made of DNA. The loss of any DNA during meiosis might mean a loss of valuable genetic information from one generation to the next.
12.1 Assessment
-
Review List the conclusions that Griffith and Avery drew from their experiments.
Identify Variables What was the experimental variable that Avery used when he repeated Griffith's work?
-
Review What conclusion did Hershey and Chase draw from their experiments?
Infer Why did Hershey and Chase grow viruses in cultures that contained both radioactive phosphorus and radioactive sulfur? What might have happened if they had used only one radioactive substance?
-
Review What are the three key roles of DNA?
Apply Concepts Why would the storage of genetic information in genes help explain why chromosomes are separated so carefully during mitosis?
Apply the Big idea
Choose either Griffith, Avery, or Hershey and Chase, and develop a flowchart that shows how that scientist or team of scientists used various scientific methods. Be sure to identify each method. You may use your flowchart from Taking Notes as a guide. If you need to, refer to the descriptions of scientific methods in Chapter 1.
Table of Contents
- Formulas and Equations
- Applying Formulas and Equations
- Mean, Median, and Mode
- Estimation
- Using Measurements in Calculations
- Effects of Measurement Errors
- Accuracy
- Precision
- Comparing Accuracy and Precision
- Significant Figures
- Calculating With Significant Figures
- Scientific Notation
- Calculating With Scientific Notation
- Dimensional Analysis
- Applying Dimensional Analysis