MPF becomes active at the end of Gap 2.
a. true
b. false
Answer: a. true
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True or False. Phylogenetic methods based on DNA sequences and data from the fossil record both show that the evolutionary link between birds and crocodiles runs through dinosaurs
A. true B. false
The barrier between the intracellular and extracellular fluid compartments in an animal or plant is the:
A. plasma membrane. B. walls of capillaries. C. nuclear membrane. D. membrane of the endoplasmic reticulum. E. membrane of the Golgi apparatus.
After mutations begin a cancer, other factors that influence whether the disease proceeds include
A) how old a person is and whether he or she smokes. B) whether a person has had cancer before and its location in the body. C) location of the cancerous cell in the tissue and how specialized the cell is. D) whether or not a person's relatives have cancer.
What is polyploidy?
a. less than the correct number of chromosome sets b. an extra chromosome 21 c. more than the correct number of chromosome sets d. a missing sex chromosome