Which of the following is a change to the nucleotides in a segment of DNA that codes for a protein?
a. Proto-oncogenes
b. Tumor suppressor genes
c. Gene mutations
d. Negative regulators
c. Gene mutations
Gene mutations are a change to the nucleotides in a segment of DNA that codes for a protein.
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Protists and some other animals use ____ digestion
Fill in the blank with the appropriate word.
The chemical difference between dideoxyribonucleotides used in Sanger sequencing and the deoxyribonucleotides
normally found in DNA is the presence of a(n) _____ in the deoxyribose sugar of dideoxyribonucleotides.
a. 3' – H rather than – OH b. 5' – H rather than – OH c. 5' – OH rather than – H d. 5' – H rather than – OH e. 3' – COOH rather than – OH
Where are the somas of spinal motor neurons located?
a. ventral root ganglions b. dorsal white matter c. ventral gray matter d. dorsal root ganglions
A population of mountain-dwelling salamanders migrates and splits into two populations separated by a valley they can not cross. The speciation process that may occur is:
A) temporal. B) sympatric. C) behavioral. D) allopatric.