Recombinant DNA technology
A) randomly creates new genes from free nucleotides.
B) involves combining existing genes from different organisms.
C) will never be of economic importance.
D) is always dangerous and inevitably leads to mutations and mistakes.
E) involves only changing genes in large mammals.
B
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You isolate a purify a bacteriophage that can replicate in E. coli. Through chemical analyses you determine that the only nucleic acid present is RNA
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Germination requires the use of metabolic reserves in the seed. Which of these compartments contains starch used to fuel early seedling growth?
A. amyloplasts B. protoplasts C. chloroplasts D. chromoplasts E. mitochondria
A woman is found to have forty-seven chromosomes, including three X chromosomes. Which of the following describes her expected phenotype?
A) a female with masculine characteristics such as facial hair B) an apparent male who is sterile C) healthy female of slightly above-average height D) a sterile female
Which series of terms correctly illustrates the sequence of the origin of modern groups of plants?
A) gymnosperms, ferns, bryophytes, angiosperms B) bryophytes, ferns, gymnosperms, angiosperms C) bryophytes, ferns, angiosperms, gymnosperms D) ferns, gymnosperms, angiosperms, bryophytes