Which process is exemplified by the opening of flowers in the late afternoon in the aptly named four-o’clock plant (Mirabilis jalapa)?
1.Circadian rhythm
2.Nasticity
3.Photoperiodism
4.Vernalization
1
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In animals, one group of homeobox genes, the Hox gene family, regulates the development and location of structures
such as legs and wings along the anterior-posterior axis of the body.
a. True b. False
A common hypothesis and casual assumption is that dogs originated from wolves. Because of the wide range of body sizes and shapes, other hypotheses include dog ancestry of jackals, coyotes, dingoes, or other wild dog species. In recent years, several studies have been done to clear up the lineage. One study tested the Y chromosome DNA that can only be passed down from male to male, and the other other study tested the mitochondrial DNA because
A. the mitochondrial DNA records the inherited genetics of all the male and female parents of each generation. B. the mitochondrial DNA contains genes that could code for dog size. C. the mitochondrial DNA is only passed down through females to each new generation. D. the mitochondria perform cellular respiration, providing energy to speed up the DNA analysis. E. the mitochondrial DNA is much smaller, easier, and faster to analyze for the dog lineage.
Which of the following statements best defines an altruistic act?
A. benefits the performer and another individual B. benefits another individual at some cost to the performer C. benefits another, related individual at some cost to the performer D. imposes a cost on the performer and another individual E. imposes a cost on the performer without benefiting another individual
Which process takes place in the cytoplasm?
a. DNA replication b. transcription c. duplication d. translation e. transition