What is the best definition of total fertility rate?
A. the average number of children born per woman during her lifetime
B. the frequency of children dying in infancy
C. the pregnancy rate in adult women
D. the rate of fertility that keeps the size of a population stable
E. the rate of fertility that leads to a decline in population
Ans: A. the average number of children born per woman during her lifetime
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What will be an ideal response?
Which gamete genotypes are expected to contribute to viable offspring when an individual is heterozygous for a pericentric inversion and crossing-over occurs as shown in the diagram? (The ? symbol represents a centromere.)(Select all that apply.)
A) ? A B C D E
B) ? A B C d a ?
C) ? a d c b e
D) e b c D E
E) ? A B C d e
F) A B C ? d a
G) e b c ? D E
H) A B C ? D E
J) a d ? c b e
Which of the following is a lophotrochozoan protostome?
a. arthropods b. cnidarians c. mollusks d. chordates e. nematodes
Once they are identified, ____ take priority in worldwide conservation efforts.
A. healthy ecosystems B. riparian zones C. hot spots D. grasslands E. forests