In meiosis, recombination occurs _______________
A. during prophase I and II and involves
exchange of chromosome fragments between
all four chromatids
B. only during prophase I and involves
exchange between chromatids of
homologous chromosomes
C. only during prophase I and involves
exchange of chromosome fragments between
sister chromatids
D. during prophase I and II and involves
exchange of chromosome fragments between
sister chromatids
B
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Meningitis can be caused by
A) viral infections. B) bacterial infection. C) fungal infections. D) viral, bacterial, or fungal infections.
Where would Methanococcus likely not be found?
a. in anoxic environments b. in swamps c. in the intestines of a cow d. in anaerobic environments e. in aerobic environments
Type II interferon inhibits viral replication and activates natural killer cells
____________________ Indicate whether the statement is true or false.
In a forest, trees that grow taller receive more sunlight and end up producing more viable seeds. Shorter trees of the same species receive less sunlight and produce few viable seeds. Over time, what type of selection will take place?
A. disruptive selection B. directional selection C. stabilizing selection D. sexual selection E. artificial selection