Four of the five answers listed below are parts
of a leaf. Select the EXCEPTION.
a. stoma
b. cuticle
c. mesophyll
d. pith
e. petiole
D
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Nucleic acid sequencing methods are based on:
a. the ability of two nucleic acid strands that have complementary base sequences to bond specifically with each other and form a double-stranded molecule. b. detecting phenotypic traits not detectable by conventional strategies. c. the principles of complementary nucleic acid hybridization with those of nucleic acid replication. d. determining the exact nucleotide sequence of a gene or gene fragment obtained from an organism.
If the lacI repressor gene was permanently silenced by a DNA mutation, what would be the impact on the expression
of the lac operon?
a. The lac operon would only be expressed if glucose was absent. b. The lac operon would always be expressed. c. There would be no impact on lac operon expression. d. The lac operon would only be expressed when lactose was present. e. The lac operon would never be expressed.
Four of the five answers listed below are related to the structure of DNA and/or its composition. Select the EXCEPTION.
a. protease b. double helix c. polymerase d. phosphate e. deoxyribose
____ code(s) for the placement of one amino acid.
A. Three codons B. One nucleotide C. Three nucleotides D. One intron