Which of the following molecules are often used as a cloning vector?
a. plasmids
b. restriction enzymes
c. recombinant DNA
d. DNA fragments
e. SNPs
ANSWER: a
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One hallmark of speciation is ____
a. lack of change in reproductive behaviors b. a decrease in balanced polymorphisms c. an increase in fixed alleles d. decreased genetic diversity of populations
e. end of gene flow between populationsWhich of the following is false regarding
hemoglobin? a. It is a protein. b. It is a pigment. c. It has the same function in mollusks, annelids, and some crustaceans as it has in humans. d. Annelid hemoglobin is a smaller than human hemoglobin. e. It is comparable in function to hemocyanin.
Which of the following is the waxy coating secreted on leaves and most stems?
A) cuticle B) lignin C) endodermis D) epidermis
CAM photosynthesis
a. is the same as C4 photosynthesis. b. is an adaptation to cold environments in the Southern Hemisphere. c. is prevalent in desert plants that close their stomata during the day. d. occurs in plants that live in marshy areas. e. stands for "chloroplasts and mitochondria."