Round 10: Tossup 15

In plants, the number of these structures can be doubled by administering colchicine or oryxalin. The adders’ tongue fern has up to 1,260 of these structures, (-5[1])the most of any plant. (15[1])Multiplying the number of these structures can lead to (15[1])sympatric speciation, (15[1])as seen in wheat, but can also lead to sterility, as seen in seedless watermelon. (15[1]-5[1])Sporophytes have (*) twice as many of these structures compared to gametophytes. Cells are classified as haploid (10[1])when they have n (10[1]-5[1])of these structures or diploid when they have 2n of these structures. Humans (10[1])typically have (10[1])46 of, (10[3])for 10 points, (10[1])what discrete (10[1])units of DNA present (10[1])during mitosis? ■END■ (10[2])

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