Place the following events of bacterial conjugation in order from first to last.
a - DNA replication
b - an enzyme joins F factor DNA ends
c - sex pilus shortens
d - DNA transfer
e - an enzyme cuts F factor DNA
A. a, b, c, d, e
B. c, e, d, b, a
C. e, a, c, d, b
D. c, e, a, d, b
E. c, e, a, b, d
B. c, e, d, b, a
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In an autosomal dominant disorder such as Huntington's disease, two carrier parents have the probability of passing
the gene onto ____ percent of their children.
a. 0 b. 25 c. 50 d. 75 e. 100
The most common type of skin cancer is __________. Fill in the blank(s) with the appropriate word(s)
Although the epidermis lacks chloroplasts, it plays an essential role in photosynthesis. What features
of the epidermis contribute to the overall photosynthetic success of a plant? What will be an ideal response?
The plant in row b of Figure 38-2 demonstrates a photoperiodic response characteristic of:
a. short-day plants. b. day-neutral plants. c. long-day plants. d. long-night plants. e. intermediate-day plants.