Two species of pines, Pinus radiata and Pinus muricota, live in the same regions of California and are capable of forming hybrids under laboratory conditions
However, they do not interbreed because one releases pollen in February and the other in April. What genetic isolating mechanism is involved?
A) Gametic
B) Temporal
C) Hybrid inviability
D) Ecological
E) Geographic
B
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Canadian researchers reported that ovenbirds exposed to the noise of compressors used in the gas and oil industry ________
a. fled the area b. raise fewer offspring c. have permanent hearing loss d. have stopped singing
Fungi and plants resemble each other because they both
a. have cells surrounded by cell walls. b. are typically heterotrophic. c. often cause disease. d. are composed of cells with two different nuclei. e. have flagellated cells.
Intervertebral disks composed of ____ separate adjacent vertebrae in the human vertebral column
a. cartilage b. tendons c. fibrous connective tissue d. ligaments e. bone marrow
Gene expression involves two phases, translation and ________.
A. initiation B. transcription C. condensation D. replication