From which of the following structures do lateral roots arise?
a. the root hairs
b. the endodermis
c. the pericycle
d. the root cap
Answer: c. the pericycle
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Which of the following describes the approximate chromosomal location of the termination of replication in bacteria?
A. Termination occurs at oriC once the replication fork has advanced the entire length of the chromosome. B. Termination occurs at a location one-quarter around the chromosome. C. Termination occurs at a location halfway around the chromosome. D. Termination is random. E. The chromosomal location of termination is not known.
Fossilization begins ____
a. when an organism’s remains are found underwater b. when decay begins c. after an organism is buried in sediments d. immediately after stratification ends e. after speciation
If two phenotypically normal parents have six children, and two daughters and two sons have the same genetic
disorder, that disorder is most likely to be ____. a. hemophilia b. cystic fibrosis c. Marfan syndrome d. muscular dystrophy e. color blindness
An example of a primary sex characteristic in males is:
a. growth of facial hair. b. growth of body hair. c. spermatogenesis. d. muscle development. e. increase in length of vocal cords.