Chromosomes are replicated during the ________ phase.
A. G2
B. M
C. S
D. G1
E. meta-
Answer: C
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You have an F2 generation derived from two true-breeding parents with different characteristics for the same trait determined by a single allele
What percentage of the F2 generation with a dominant phenotype would you expect to be homozygous for your single allele of interest? A. 0% B. 25% C. 33% D. 67% E. 75% F. 100%
Mangrove forests replace salt marshes in subtropical and tropical systems
1.True 2.False
In studies of two species of barnacles in the marine intertidal zone it was observed that Chthamalus can live in the upper intertidal zone and the lower intertidal zone if Semibalanus is absent, and Semibalanus can only live in the lower zone because it is more subject to dehydration. Based on this, which of the following statements are true? Check all that apply.
_____ The realized niches of the two species differ. _____ The fundamental niche of Chthamalus is larger than its realized niche. _____ The fundamental niche of Chthamalus is larger than the fundamental niche of Semibalanus. _____ The fundamental and the realized niches of Chthamalus are the same. _____ The fundamental and the realized niches of Semibalanus are the same.
Some of the enzymes stored in peroxisomes are used to break down
A) a cell when it becomes damaged. B) bacteria and viruses. C) faulty proteins produced by the cell. D) the plasma membrane. E) hydrogen peroxide.