According to the redundancy hypothesis, species are redundant if
A. they have an effect on the ecosystem that is disproportionate with their abundance.
B. they could be eliminated or replaced by others with no loss of ecosystem function.
C. their ecological niche overlaps somewhat with another species.
D. they have grown beyond their carrying capacity for a particular ecosystem.
Answer: B
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What is required if a researcher wants to analyze homologous genes in different species?
A. relatively short DNA sequences B. relatively short RNA sequences C. relatively long DNA sequences D. relatively short polypeptide sequences E. relative differences in the species’ metabolisms.
How many nuclear envelopes form during mitosis and meiosis?
a. Two nuclear envelopes form during both mitosis and meiosis. b. Two nuclear envelopes form during mitosis and four during meiosis. c. Two nuclear envelopes form during mitosis and six during meiosis. d. Four nuclear envelopes form during both mitosis and meiosis.
Prokaryotes can acquire new DNA via transformations, transduction, and which of the following?
a. mitosis b. meiosis c. conduction d. conjugation
What is the chi-square value?
a. 0 b. 8 c. 16 d. 64