What did Rosalind Franklin contribute to the discovery of the structure of DNA?
What will be an ideal response?
Franklin was an expert X-ray crystallographer who made the first clear X-ray diffraction pictures of DNA. She analyzed the images mathematically and presented these findings to the scientific community.
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True or false: In general, males and females of the same species can produce fertile offspring
A. true B. false
A nosocomial infection is one that:
A) a patient develops during hospitalization or erupts within 14 days of hospital discharge. B) affects only the nose. C) is acquired in the community. D) the patient has at the time of hospital admission.
DNA fingerprints, such as those first used by Alec Jeffries, reveal variations in _____ between different individuals
a. blood type b. cancer-causing mutations c. transgenes d. the locations of restriction enzyme recognition sites e. STR alleles
Which vessel might be blocked if the heart itself was not being well oxygenated?
A. aorta B. coronary artery C. carotid artery D. superior vena cava E. inferior vena cava