Through genetic engineering, it is possible for scientists to identify the sequence of bases in DNA, determine the location of certain genes in DNA, and create more DNA from DNA samples
Indicate whether the statement is true or false
TRUE
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A lysosomal enzyme works best at a pH of:
A. 3 B. 5 C. 7 D. 8
Answer the following statements true (T) or false (F)
1. The modification of a limb that was used for walking in a pre-existing ancestor to one that is used as a wing for a species today is called proteomics. 2. A bacterial infection such as pneumonia is most likely caused by organisms derived from the animal kingdom. 3. All genetic mutations are harmful to an organism. 4. Vertical evolution, whereby living organisms evolve from a common ancestor ("tree of life"), is the only mechanism of evolution on Earth.
A dikaryotic cell
a. is a spore. b. results from nuclear fusion. c. contains nuclei of two different mating types. d. becomes a zygote. e. becomes a gamete
If a human female has 2 Barr bodies per cell, it is almost certain that
A. her father had 1 Barr body per cell. B. her mother also had 2 Barr bodies per cell. C. she is genetically a normal fertile female. D. she is genetically a male with female characteristics. E. she developed from a fertilized egg with 3 X chromosomes.