The age of the twig in Figure 35-1 is __________ years
a. 0
b. 1
c. 2
d. 3
e. 5
D
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A particular sea bird has a Type 1 survival curve, and older female birds produce more eggs than younger birds. What is an evolutionary strategy of these birds?
a. young birds reach maturity rapidly b. reproduction is delayed c. birds reach maturity slowly d. both a and b e. both b and c
Which process provides the genetic variability that natural selection acts on during evolution?
a. fitness b. mitosis c. mutation d. adaptation e. artificial selection
Microtubules that form the mitotic spindle tend to originate from or terminate in
a. centromeres and telomeres. b. euchromatin. c. centrioles and telomeres. d. the nuclear envelope. e. centrioles and kinetochores.
Which term refers to growing useful mutants that develop from callus culture?
a. grafting b. protoplast fusion c. fragmentation d. somatic embryogenesis