20. Sketch and label a centrosome with two centrioles.

20. Sketch and label a centrosome with two centrioles.

7. Name the two types of gametes. \( \quad \square \quad \) and

9. Define chromatin.

11. You are going to have to learn the difference between several similar-sounding terms. Figure 9.4 represents a replicated chromosome that has two sister chromatids. The narrow "waist" represents the location of the centromere. Students often get all these terms confused, so take time now to draw a quick sketch of a chromosome and label the following areas: chromosome, chromatid, centromere, chromatin.

What is the mRNA produced if G is inserted at the beginning of the DNA segment?