You have isolated DNA from three different cell types of an organism, determined the relative DNA content for each type, and plotted the results on the graph shown in Figure 13.3. Refer to the graph to answer the following
questions.

-A tetrad includes which of the following sets of DNA strands?

Question

You have isolated DNA from three different cell types of an organism, determined the relative DNA content for each type, and plotted the results on the graph shown in Figure 13.3. Refer to the graph to answer the following
questions.
 
-A tetrad includes which of the following sets of DNA strands?

Quizplus · Accepted Answer

A tetrad refers to the four chromatids that are present in a pair of homologous chromosomes that have undergone synapsis during prophase I of meiosis. Therefore, option B - Two sets of sister chromatids that have synapsed - is the correct choice. Option A is incorrect because single-stranded chromosomes do not exist during meiosis. Option C is incorrect because each tetrad contains only two sets of sister chromatids, not four. Option D is incorrect because each tetrad consists of two chromosomes, not four. Option E is incorrect because each tetrad consists of two sets of sister chromatids, not eight.

You Have Isolated DNA from Three Different Cell Types of an Organism