_________________ produces new species and _________________ takes them away.
A. Extinction; speciation
B. Speciation; extinction
C. Background extinction; mass extinction
D. Gradual change; punctuated equilibrium
Answer: B. Speciation; extinction
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A. Golgi apparatus B. Nucleus C. Lysosome D. Rough endoplasmic reticulum
Recent molecular analyses of Rozella allomycis suggest that the phylum ____ is the earliest-diverging clade of fungi
a. Glomeromycota b. Ascomycota c. Cryptomycota d. Chytridiomycota e. Zygomycota
If a double stranded piece of DNA is amplified by PCR then after 4 cycles there would be _____ copies of this DNA
1.2 2.4 3.8 4.16 5.32
Which of the following types of behavior describes the way that mice find their way through mazes?
A. Habituation B. Imprinting C. Reasoning D instinct E. Trial and error