The processes illustrated in the models depicted above all result in which of the following?
A) Transcription
B) An increase in genetic variation
C) An increase in the chromosome number
D) Horizontal gene transfer
Ans: B) An increase in genetic variation
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The conifers, such as pines and junipers, are examples of:
a. gymnosperms b. angiosperms c. bryophytes d. lycophytes e. seedless vascular plants
Which method of fragmenting DNA would not be useful for sequencing a genome for the first time?
A) Complete digestion with a restriction enzyme B) Partial digestion with a restriction enzyme C) Forcing DNA through a thin needle D) Exposing DNA to ultrasound energy
High glucose levels decrease activity of the galactoside permease transporter. When lactose and glucose levels are high outside the cell, what will be the effect on lactose transport?
A. Lactose transport will increase. B. Lactose transport will not change C. Lactose transport will decrease
A pollination syndrome is
A. a brushlike tongue of hummingbirds to which pollen adheres. B. the synchronous release of pollen by many individuals of wind-pollinated trees. C. a series of bristles on the backs of insects to which pollen adheres. D. the simultaneous release of two sperm, one to affect fertilization and the other to initiate formation of endosperm. E. specializations of plants that attract a specific kind of pollinator.