Molecular evidence indicates that the division between humans and African apes took place
Ans: 5-8 mya
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Which of the following mechanisms make it difficult to classify bacteria into different species groups?
A. vertical evolution. B. horizontal gene transfer. C. sexual reproduction. D. asexual reproduction. E. low mutation rates.
If the rate of photosynthesis stops increasing, at what concentration of CO2 does it stop increasing?
a. between 100 and 300 ppm b. between 300 and 500 ppm c. between 500 and 700 ppm d. between 700 and 900 ppm
What initiates the sodium-potassium pump?
A. Two potassium ions are transported into the cell. B. ATP binds to the protein which becomes phosphorylated (ADP is released). C. Three sodium ions are translocated out of the cell. D. Three sodium ions bind to the cytoplasmic side of the protein. E. Phosphorylated pump has low affinity for sodium allowing sodium to leave and potassium to bind.
Consider two loci (A, B) each with two alleles (A, a; B, b). The frequency of A is known to be = 0.3, the frequency of b is known to be = 0.25 and the value of linkage disequilib-rium between loci A and B is known to be = 0.15
What is the expected haplotype frequency of haB? Please show your work. What will be an ideal response?