The two-stage life cycle in plants evolved as an adaptation to life on land.
a. true
b. false
Answer: a. true
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Which of the following questions might be answered by using the method described?
A) How many cells are produced by the culture per hour? B) What is the length of the S phase of the cell cycle? C) When is the S chromosome synthesized? D) How many picograms of DNA are made per cell cycle? E) When do spindle fibers attach to chromosomes?
In birds, if the offspring require extensive care, usually involving both the male and female, they are called
A. semelparous species. B. altricial species. C. precocial species. D. iteroparous species. E. sympatric species.
Unlike prokaryotes, most gene regulation in eukaryotes
A) takes place at the transcriptional level. B) is controlled at the level of transcript processing. C) is controlled by inhibitory proteins. D) is based on posttranslational modification. E) None of these
During the majority of male human fetal development, the testes are in the _____________
Fill in the blank(s) with the appropriate word(s)