In Drosophila, the sex of an individual is determined by
A. 1 pair of alleles.
B. 2 pairs of alleles.
C. 1 pair of autosomes.
D. the number of X chromosomes.
E. the number of Y chromosomes.
Answer: D
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There doesn't appear to be much diversity in the cell cycle processes of the Archaea, and Sulfolobus serves as an excellent model for all other Archaea.
Answer the following statement true (T) or false (F)
The resident microflora that can colonize the bladder and other structures of the urinary tract are:
a. Enterobacteriaceae. b. yeast. c. Propionibacterium acnes. d. Corynebacteria.
I tried to sequence a DNA fragment and ended up with the trace pattern shown in the figure above
What is the most likely cause of this result?
a. I forgot to add the ddCTPs to the sequencing reaction. b. I forgot to add the normal dCTPs to the sequencing reaction. c. I forgot to add DNA polymerase to the sequencing reaction mix. d. The fluorescent tags for the ddGTPs are degraded. e. The polyacrylamide gel didn't polymerize properly and is altering the migration patterns of the DNA fragments.
The main reason scientists thought that proteins, rather than DNA, were the carriers of genetic material
in the cell was:a. their presence within the nucleus. b. their abundance within the cell. c. the large number of possible amino acid combinations. d. their ability to self replicate within the cytoplasm. e. their ability to be exported from the cell.