Which of the following plant hormones breaks dormancy in seeds and buds when applied to the plant?
A. ethylene
B. cytokinin
C. gibberellins
D. auxin
E. abscisic acid
Answer: C
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ANSWER: e
a. begins as a gametophyte and ends up as a sporophyte before germination b. is always a sporophyte c. is usually a gametophyte but can be a sporophyte d. begins as a sporophyte and ends up as a gametophyte before germination e. is always a gametophyte
Restriction enzymes
a. work at recognition sites. b. function only at "sticky ends." c. produce uniform lengths of DNA. d. function in viruses. e. are produced by viruses to break down bacterial DNA
Which of these statements is true of meiosis?
(A) Meiosis plays a role in growth, reproduction, and repair (B) Meiosis produces gametes that contain one complete haploid set of chromosomes (C) Meiosis occurs after DNA replication (D) Meiosis, followed by cytokinesis, produces two genetically identical daughter cells
The principle of parsimony ____ for constructing the phylogenetic tree that represents the smallest number of
evolutionary changes.
a. minimizes the number of homologiesb. maximizes the number of homologies c. completely ignores homologies d. minimizes the number of homoplasies e. maximizes the number of homoplasies