Several times in Earth's history, land masses have converged as supercontinents. ____________________ and
____________________ are examples. Fill in the blank(s) with the appropriate word(s).
ANSWER: Gondwana, Pangea; Pangea, Gondwana
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All of the phenotypes listed below are determined at least partially by genotype. Which trait is most likely to be influenced by the environment as well?
A. eye color B. height C. weight D. facial features E. None of the answer options is correct; all of the traits are exclusively determined by genotype.
A cell with 22 chromosomes enters meiosis, and by the end of the process has produced ________ cells with ________ chromosomes each
a. 4 / 11 b. 2 / 11 c. 2 / 22 d. 4 / 44
A population in which ? equals one has reached a stable-age distribution
Indicate whether the statement is true or false
The total length of the cell cycle of cells in a cell culture is 24 hours. M phase is found to be 1 hour, S phase is found to be 9 hours and G2 is found to be 4.5 hours. How long is G1?
a) 24 hours b) 9.5 hours c) 9 hours d) 1 hour e) 4.5 hours