Which of the following pairs is mismatched?
a. Ehrlich - chemotherapy
b. Koch - aseptic surgery
c. Pasteur - proof of biogenesis
d. Jenner - vaccination
Answer: b. Koch - aseptic surgery
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During which of the following processes does the cytoplasm of two fungal hyphal cells fuse to form a dikaryotic (n+n) cell?
A. karyogamy B. heterokaryogamy C. plasmodesmatogamy D. plasmogamy
Plant cells that give rise to two cells, one of which is free to differentiate into various kinds of cells that contribute to the plant body, are called
A. endodermal cells. B. primary cells. C. lateral cells. D. parenchyma cells. E. meristematic cells.
In modern terms, Mendel's law of independent assortment states that ________
a. genes are sorted into gametes independently of other genes b. alleles are separated from each other during meiosis c. the probability of two independent events occurring together is the product of the individual probabilities d. alleles are sorted into the same gamete during meiosis
Which of the following represents a prezygotic barrier to reproduction?
a. hybrid sterility b. hybrid breakdown c. behavioral isolation d. hybrid inviability e. hybrid weakness