Which of the following lists the structures of the male reproductive tract in the proper order from sperm production to ejaculation?
A. seminal vesicles; vas deferens; prostate; urethra; ejaculatory duct
B. vas deferens; epididymis; seminiferous tubules; ejaculatory duct; urethra
C. vas deferens; epididymis; seminal vesicles; ejaculatory duct; urethra
D. epididymis; seminiferous tubules; ejaculatory duct; vas deferens; urethra
E. seminiferous tubules; epididymis; vas deferens; ejaculatory duct; urethra
Answer: E
You might also like to view...
Which of the following would most likely result in a bottleneck event, why?
A. A small population of geese migrates and joins a large nesting flock of the same species. This is a bottleneck event because the small population do not bring in any new alleles to the large flock. B. A mutation occurs in an individual poison ivy plant, doubling the number of seeds it produces. This is a bottleneck event because even though the mutation is passed down to the next generations, it does not change the frequency of any other alleles in the population. C. A hurricane blows through a coastal swamp, killing 98% of the snails in a population. This is only a bottleneck event if there is a change in the number of alleles in the population. The 2% of the snails remaining still have the same allele frequencies as the total population. D. A large population of broomsedge grass in a field is determined to be in Hardy-Weinberg equilibrium. This is a population bottleneck event because there is no random mating going on which increases the likelyhood that there will be a decrease in the number of alleles in the population. E. A small population of ducks with red beaks join a large population of ducks that have no red beaks. After 5 generations the number of ducks with red beaks is reaching 50% in the population. This is a bottleneck event because there is a decrease in the number of ducks without red beaks.
The restriction enzyme SmaI cuts DNA at the 6-base recognition sequence 5'-CCCGGG-3'. Calculate the frequency of occurrence of this sequence. (Assume a 50% GC content.)
What will be an ideal response?
Which of the following is not part of the activation program of the egg?
a. increase in aerobic respiration b. capacitation c. activation of enzymes d. increase in protein synthesis e. completion of meiosis
You find a protist that has a single flagellum surrounded by a collar of microvilli. You correctly conclude that this
organism is a(n): a. plasmodial slime mold. b. cellular slime mold. c. choanoflagellate. d. foraminiferan. e. alveolate.