if DNA is damaged and can't be repaired,
What will be an ideal response?
the p53 protein initiates apoptosis.
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As cell lineages use varying subsets of genes during development, they become specialized through a
process called __________. Fill in the blank(s) with the appropriate word(s).
Describe the challenges that plants faced when they entered the land, and how did they overcome
them? What will be an ideal response?
The migration of breeding individuals between populations causes a corresponding movement of alleles, which is
referred to as: a. mutation. b. gene flow. c. genetic drift. d. natural selection. e. directional selection.
Bacteria isolated from Lake Natron, where the water pH is close to 10, are which of the following?
A. alkaliphiles B. facultative anaerobes C. neutrophiles D. obligate anaerobes