In the United States, acid rain is most prevalent in the
a) northeast
b) southeast
c) southwest
d) northwest
e) northeast and the southwest
Ans: a) northeast
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The lateral line is:
A. a lateral stripe on the side of male fish that aids in sex-recognition B. a series of sensory organs that detects pressure waves in the water C. the row of fins along the sides of eels D. the row of pharyngeal slits along each side of the heads of fish E. the row of small blocks of cartilage along each side of the notochord of agnathan fishes
DNA replication proceeds in one direction around the bacterial chromosome.
Answer the following statement true (T) or false (F)
Einkorn (Triticum boeoticum) is an ancient grain with a diploid number of 14 (2n = 14). Durum (Triticum turgidum) appeared later. Durum grains are larger and the plant is hardier
It has twice the genetic material of Einkorn (2n = 28 ) but contains basically the same chromosomes. Can you propose a hypothesis on how durum evolved?
Which of the following is NOT normally considered
a temporary method of contraception? a. birth-control pills b. vasectomy c. condoms d. IUD plus spermicide e. spermicidal jelly or foam