Dideoxynucleotides are used in:
a. DNA ligation.
b. Southern blotting.
c. polymerase chain reaction.
d. DNA sequencing.
e. gel electrophoresis
D
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As you saw while performing thin layer chromatography, photosynthetic pigments are mostly hydrophobic substances soluble in organic solvents but not in water-based solutions. How does this feature explain the location of these pigments within the chloroplast?
What will be an ideal response?
Answer the following statements true (T) or false (F)
1. Sexual selection is a type of natural selection resulting from variation in the ability to find mates. 2. Today, 40% of hospital Staphylococcus infections are resistant to all antibiotics except one. 3. Evolution does answer the question as to how life originally began. 4. Artificial selection is responsible for many breeds of dogs and cats. 5. Darwin believed that because of "differential reproductive success" a population would change over time
Which of the following is a common reason for hybrid infertility?
a. They express mechanical incompatibility. b. They are found to be ecologically isolated. c. A common reason for hybrid infertility is the failure of chromosomes to pair properly during meiosis. d. They fail to reach sexual maturity.
"Fast flushers" are people who lack:
the ability to make proteins inside their cells. enough alcohol in their diet. a functional enzyme that metabolizes alcohol. the enzyme needed to digest lactose. the smarts to know when "enough is enough."