Self-incompatibility in flowering plants is a biochemical recognition and rejection process that prevents ____
a. both self-fertilization and self-pollination
b. self-pollination and occasionally prevents self-fertilization
c. self-fertilization but not self-pollination
d. self-pollination but not self-fertilization
e. self-fertilization and occasionally prevents self-pollination
ANSWER: c
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Even though the phylogenetic lineages for hominins are not definitive, four of the following statements describe
possibilities. Which is NOT a possibility? a. Homo preceded Australopithecus. b. Homo sapiens is the most recent. c. Australopithecus is probably more ancient than Homo. d. Homo erectus preceded Homo sapiens. e. Chimpanzees and bonobos are the closest living relatives to modern humans.
Because so few bacteria can be grown easily in culture but all of them contain DNA, molecular techniques like PCR and SSU rRNA are used to be able to identify and quantify microorganisms as a "census" for diversity.
Answer the following statement true (T) or false (F)
At approximately what age is the maximal level of bone mineralization reached?
A. 45-50 B. 30-40 C. 15-18 D. 20-30
Taxonomy is based on putting organisms into monophyletic groups. Which kingdom contains organisms that should be split into several kingdoms?
a. protista b. plantae c. fungi d. animalia