What happened in an experiment where normal cultured human cells were infected with a virus that carried DNA
encoding for the telomerase catalytic subunit?
a. The cells underwent more cell divisions than normal.
b. The cells underwent fewer cell divisions than normal.
c. The cells died almost immediately.
d. The cells did not express the foreign telomerase gene.
e. The cell cycle shortened.
a
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If x indicates the location of fossils of two closely related species, then fossils of their most-recent common ancestor are most likely to occur in which stratum?
A) A B) B C) C D) D
Many desert animals will restrict activity to the cooler parts of the day. In terms of water
conservation, nighttime activity reduces water loss via __________.
a. metabolism b. evaporation c. urine d. drinking
_______ occurs as a long-thin strand of DNA protein complex, found in a loosely packed formation, while ________ are formed by a tighter packing, via coiling and compact folding of the DNA protein complex are thus visible.
Fill in the blank(s) with the appropriate word(s).
Describe what is meant by a DNA fingerprint and how it is used in forensic science.
What will be an ideal response?