In which case is it better for an organism to reach sexual maturity when it is older?
A. When predation is high
B. When small individuals have higher mortality than larger ones
C. When others in the population reproduce at younger ages
D. When population density is low
Ans: B. When small individuals have higher mortality than larger ones
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Eukaryotic telomeres replicate differently than the rest of the chromosome. This is a consequence of which of the following?
A) the evolution of telomerase enzyme B) DNA polymerase that cannot replicate the leading strand template to its end C) gaps left at the end of the lagging strand D) gaps left at the end of the lagging strand because of the need for a primer E) the "no ends" of a circular chromosome
If a positive reaction is last observed at a dilution of 1:256, the titer is
A. 128. B. 1/512. C. 1/256. D. 256.
Kelps cannot live in water warmer than ____° C
a. 10 b. 20 c. 30 d. 40 e. 50
The embryonic germ layer of tissue in animals that develops into the skin and nervous system is the
A. mesoderm. B. protoderm. C. ectoderm. D. pachyderm. E. endoderm.