Which of the following techniques involves using tiny DNA-covered spheres of gold or other metals to deliver transgenes into plant or animal cells?

A) Retrovirus-mediated transfer
B) Pronuclear microinjection
C) Electroporation
D) Gene gun
E) Calcium chloride transformation


D

Biology & Microbiology

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Which one of the following incorrectly matches a molluscan structure with its typical function?  

A.  ctenidia—secretion of the shell (when present) B.  visceral mass—houses organs of digestion, excretion, reproduction C.  foot—locomotion D.  nephrostome—collection of nitrogenous wastes E.  radula—feeding organ

Biology & Microbiology

The inherited mechanisms that protect the body from pathogens are called ____

a. the immune system b. vaccination c. restriction endonucleases d. the pathogen defense system e. immunological tolerance

Biology & Microbiology

Summarize the human social elements necessary to address when designing a conservation plan

What will be an ideal response?

Biology & Microbiology

In humans, hair texture is an incompletely dominant trait. Curly is the dominant genotype, wavy is

heterozygous, and straight hair is recessive. What is the probable phenotypic ratio for a cross between a man with wavy hair and a woman with curly hair? A. All wavy hair B. 3/4 wavy hair; 1/4 straight hair C. 1/2 wavy hair; 1/2 curly hair D. All curly hair E. 1/4 curly hair; 1/2 wavy hair; 1/4 straight hair

Biology & Microbiology