Distribution of daughter chromosomes derived from sister chromatids during meiosis II then leads to a total of ______ new cells, each with the haploid number of chromosomes.
Fill in the blank(s) with the appropriate word(s).
Answer: 4
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The metabolic diversity of photosynthetic bacteria stems from different
A) bacteriochlorophylls and pigments they contain. B) chlorophylls they can have and organic compounds they can produce. C) light-harvesting complexes, electron donors, and organic compounds they produce. D) unrelated taxa capable of photosynthesis.
Climate has been proposed to play a role in the latitudinal diversity gradient. Specifically, some have hypothesized that
A. the warm climate of the tropics promotes high speciation rates. B. the warm climate of the tropics promotes niche diversification. C. relatively few species are able to adapt to the harsher, more variable climates of the high latitudes. D. the harsh, more variable climates of the high latitudes reduce speciation rates. E. none of these
The phenotypic changes shown in the figure above represent
A. punctuated equilibrium.
B. horizontal gene transfer.
C. gradualism.
D. speciation based on sexual selection.
Where would the highest-energy electron be found in an atom of hydrogen?
a. in the second spherical orbital b. in the dumbbell-shaped orbital of the y axis c. in the spherical orbital closest to the nucleus d. in the dumbbell-shaped orbital of the z axis e. in the dumbbell-shaped orbital of the x axis