Point mutations
A. are due to a change in one DNA nucleotide
B. may change a specific codon
C. can cause a genetic disease such as sickle cell disease that is due to a base change that codes for valine rather than glutamate
D. all of the choices are correct
Ans: D. all of the choices are correct
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Examine the relationships between the elephants in the figure below. Which one of the following pairs is most closely related?
A) Deinotherium and Platybelodon B) Barytherium and Stegodon C) Loxodonta africana and Loxodonta cyclotis D) Mammut and Stegodon
Regulation of cellular processes via chromatin remodeling or compaction are used by eukaryotic cells but not archaeal cells.
Answer the following statement true (T) or false (F)
You want to know whether the virulence genes present in Bordetella pertussis are evolutionarily related to genes in the less pathogenic species B. bronchiseptica or if the virulence genes were acquired via horizontal gene transfer
What characteristic(s) would you compare to answer this question? A) percentage of GC content and codon usage B) genome size and number of introns C) number of genes in the pan genome D) ribosomal binding site and intron sequence
In the Hershey-Chase experiments, the radioactive tracers 32P and 35S were used to track DNA and protein,
respectively, because _____.
a. bacterial DNA contains sulfur and viral DNA contains phosphorus b. viral DNA contains sulfur and bacterial DNA contains phosphorus c. only DNA contains phosphorus and only protein contains sulfur d. DNA has more sulfur than protein, and protein has more phosphorus than DNA
e. protein has more sulfur than DNA, and DNA has more phosphorus than protein