You are performing a fruit fly cross similar to those that Morgan performed. Unfortunately, you forgot to write down the parents of your cross
You count the progeny, and find you have 40 red-eyed males, 80 red-eyed females, and 40 white-eyed males. Assuming that all genotypes from this cross should have equal survival rates, what are the genotypes of the parent flies?
A. XwY and Xw+Xw+
B. XwY and Xw+Xw
C. Xw+Y and Xw+Xw
D. Xw+Y and XwXw
C
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Which is most analogous to the role of GFP in recombinant DNA technology?
A. Creating a metagenomic library representing archaea bacteria that thrive in the hot springs of Yellowstone National Park. B. Comparing the RFLP patterns of DNA from various suspects to DNA isolated from the scene of a crime using gel electrophoresis. C. Monitoring the spread of multi-drug resistant pathogens on a hospital floor by comparing antibiotic susceptibility patterns. D. Using dyes to stain and detect bacteria under light microscopy from the sputum of a patient diagnosed with tuberculosis.
Which category of bacteria provides the greatest benefit to production of crop plants?
a. spirochetes b. heat-loving T. aquaticus c. nitrogen-fixing bacteria d. Agrobacterium e. L. acidophilus
Chromatids that are attached at the centromere are
called what kind of chromatids? a. mother b. daughter c. sister d. programmed e. either mother or daughter
An organism's genotype is its genetic makeup. An organism's physical traits are its phenotype
a. true b. false