To extract DNA from wheat germ we used Palmolive soap to break open the nuclear membranes. What is the equivalent we used to extract DNA from your (or your lab mate’s) cheek cell?

In aardvarks, the gene for brown coloration (B) is dominant over the gene for grey coloration (b). A long tail (L) is dominant over a short tail (l). A female that is heterozygous for coloration and has a short tail is mated with a male that is grey and is heterozygous for a long tail. Based on the laws of Mendelian Inheritance, what are the possible gametes for the FEMALE?

The LEFT side of a leaf (YOUR left, as you are looking at the leaf) has been exposed to sunlight, while the RIGHT side has been kept in darkness for 48 hrs. The leaf was then boiled in water, placed in alcohol, and treated with iodine, which stains the starch a dark brown-black color. Which illustration best represents the expected pattern of starch synthesis in this leaf after the iodine treatment?

What is the total magnification of this dissecting microscope?

The ability to taste PTC (phenylthiocarbamide) on paper strips… (Select all that are correct)

The data shows the results from a cross in corn between a purple, rough individual and a yellow, smooth individual (Ppss x ppSs). Results were collected from 40 offspring.     Classes   PpSs Ppss ppSs ppss Expected 10 10 10 10 Observed 15 4 16 5  X2 = ∑(d2/e)d (deviation) = observed – expectedBased on the information given, calculate the chi-square value.

The Technology Informatics Guiding Education Reform (TIGER) initiative (2020) identified a set of skills needed by all nurses practicing in the twenty-first century. The nurse understands which statement to be accurate regarding the TIGER initiative?

Which statement below is true about the karyotype shown?

You measured and recorded the mass of a potato slice before placing it in an unknown solution.  You recorded the weight as 23 grams.  You placed the potato slice in the unknown solution, and let it soak in the solution for 24 hours.  After that, you re-measured the mass of the potato slice and found that the mass had decreased to 11 grams after soaking.  Given this information, what can be said about the osmolarity of the unknown solution?

What genotype would be a good candidate to perform a test cross with an unknown individual?