Which event occurs in mitosis but NOT in meiosis?
a. bipolar spindle formation
b. tethering of chromosomes to microtubules
c. chromosomes dragged to poles by microtubules
d. nuclear envelopes breaking up and reforming
e. none of these
Answer: e
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If an organism with 64 chromosomes mates with a closely related organism with 62 chromosomes, the most likely
result will be ____.
a. many unhealthy offspring due to hybrid breakdown b. many unhealthy offspring due to hybrid inviability c. no offspring due to hybrid sterility d. sterile offspring due to hybrid inviability e. sterile offspring due to hybrid sterility
Refer to Figure 49-1. Which of the following is a steroid hormone?
a. 1
b. 3
c. 6
d. 8
e. 10
Which of the following is NOT part of the pharynx?
A. Oropharynx B. Nasopharynx C. Esopharynx D. Laryngopharynx
A piece of petrified wood was once part of a living organism that has had its tissues replaced by minerals. Which property of life will still be present in the wood?
a) response to stimuli b) organization c) growth and reproduction d) metabolism e) homeostasis