The final step in the development of eukaryotic cells was likely ____
a. duplication of function in the endosymbiont and host cell
b. transfer of genes and function from the endosymbiont to the host cell
c. circularization of DNA
d. formation of membrane-bound organelles
e. ingestion of photosynthetic bacteria
ANSWER: b
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Asexually produced spores will result in offspring that ____
a. have no mating type b. are genetically distinct from the parent fungus c. are clones of the parent fungus d. have a different mating type from the parent fungus e. are unable to reproduce
Which of the following is not a characteristic found among animal species?
A. All of the answer choices are correct. B. They have a developmental stage called a blastula. C. They are heterotrophs. D. They secrete and bind to a substance called the extracellular matrix. E. They are multicellular eukaryotes.
A color-blind man has a son who is also color blind. The son inherited the condition from his
____________________. Fill in the blank(s) with the appropriate word(s).
Which method of inserting DNA into cells is illustrated in Figure 8.1?
A. protoplast fusion B. injection C. electroporation D. a gene gun E. transduction