Which of the following statements is true?
a. There is no danger involved in recombinant
DNA research in humans.
b. There is no danger involved in recombinant
DNA research in bacteria.
c. There is no danger in releasing recombinant
organisms into the environment.
d. Stringent safety rules make the use of
recombinant DNA research possible.
e. It is safe to conduct recombinant DNA research
in plants.
Answer: d
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This structure serves to block more than one sperm from entering the fertilized egg
a. acrosome b. yolk c. amnion d. fertilization membrane e. mitochondria
If an experimenter interferes with the
mesoderm in an egg, which of the following systems would NOT be affected by the experimenter?
a. circulatory system b. muscular system c. reproductive system d. integumentary system e. excretory system
Which one of the following fungal groups has an alternation of multicellular gametophyte and sporophyte generations?
A. Ascomycetes B. Glomeromycetes C. Blastocladiomycota D. Chytridiomycetes E. Zygomycetes
An animal whose body cavity is completely lined with mesoderm has a pseudocoelom
Indicate whether the statement is true or false