A change in the genetic material that involves the insertion or deletion of one or more nucleotides in a gene, resulting in a change in the triplet grouping of a nucleotide
What will be an ideal response?
Frameshift Mutation
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You are out at night and hear a sound in the bushes. The electrical signal carrying this information to your brain is carried first by a
A. sensory neuron. B. motor neuron. C. interneuron. D. glial cell. E. All of these choices are correct.
Scientists often study lichens to look at the effects of acid rain. Why?
a. Lichens absorb water directly from air. b. Lichens are located in many diverse environments. c. Lichens can withstand droughts. d. Lichens get water from the area directly beneath trees.
Plants living in standing water often face which of the following problems?
A. Increased CO2 levels B. Loss of stomata C. Harmful root pressure D. Oxygen deprivation E. Chilling of the roots
Small circular molecules of DNA in bacteria ____.
A. are plasmids B. are DNA fragments from their main chromosome C. result from the activity of restriction enzymes D. are eventually degraded E. cannot survive outside of the cell