Why is the Hardy-Weinberg law useful in spite of the fact that its conditions are never met in natural populations?
What will be an ideal response?
The Hardy-Weinberg law is useful because it provides a baseline value for genetic equilibrium. When researchers are examining the frequency of alleles for a particular gene in a population, they can use the genetic equilibrium value as a benchmark to see how different the frequency is in a natural population. The skewed allele frequency can provide evidence of selection and evolution.
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Which of the following statements is most likely true regarding the results in the figure above?
A) D is the child of A and C. B) D is the child of A and B. C) D is the child of B and C. D) A is the child of C and D. E) B is the child of A and C.
Microbes called the group I archaea or mesophilic Crenarchaeota that were found to oxidize ammonia in marine environments are now placed in the phylum ________.
A. Korarchaeota B. Crenarchaeota II C. Thaumarchaeota D. Euryarchaeota
Which statement best describes why oxygen is unloaded in tissue that is highly active?
A) As temperature increases due to increased metabolism, the affinity of hemoglobin for oxygen is decreased. B) As temperature increases, the carbamino effect causes hemoglobin to release oxygen. C) As temperature increases, the Bohr effect causes hemoglobin to release oxygen. D) Highly active tissues produce more carbon dioxide, which competes for the heme groups in hemoglobin, thereby displacing oxygen. E) As temperature increases, the affinity for oxygen to hemoglobin increases, allowing more oxygen to be carried to the tissues.
Okazaki fragments are synthesized during replication. These fragments will make up the _________, and they are synthesized by_________
A. Lagging strand, DNA polymerase B. Lagging strand, Reverse transcriptase C. Leading strand, DNA polymerase D. primer, DNA polymerase E. Leading strand, RNA polymerase