List two major differences between RNA and DNA at the level of the nucleotide
What will be an ideal response?
ribose in RNA, deoxyribose in DNA; uracil in RNA replaces thymine in DNA
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The definition of an indigenous people is a group that
A) is the oldest in its geographical area and has retained its culture. B) has a genetic disease that is rare in other groups. C) has most recently come into a geographical area. D) has been the target of discrimination.
In which of the following diseases are motor
neurons destroyed?
a. polio b. amyotrophic lateral sclerosis c. Duchenne muscular dystrophy d. multiple sclerosis e. more than one of these
Dystrophin is a protein that normally
A. shortens and lengthens to produce muscle contraction. B. carries signals into muscle cells to initiate contraction. C. strengthens the attachment between muscle proteins and the plasma membrane. D. helps provide energy for muscle contraction. E. signals muscle cells to divide.
If a very short gene consisted of just 60 bases, the protein made from the gene would be about _________ amino acids long.
Fill in the blank(s) with the appropriate word(s).