Sickle-cell anemia is an example of an inherited disease. Individuals with this disorder have misshapen (sickle-shaped) red blood cells caused by a change in the sequence of the ?-globin gene. What is the nature of the change?
(a) chromosome loss
(b) base-pair change
(c) gene duplication
(d) base-pair insertion
(b)
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An early attempt by Cohn at bacterial classification grouped bacteria according to their
A. biochemistry. B. Gram stain. C. shape. D. arrangement.
Based on their response to a particular hormone from
the anterior pituitary, Sertoli cells of the male are most like __________ of the female. a. uterine cells b. oviducts c. ovarian follicles d. cervix cells e. the corpus luteum
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A) sympathetic B) parasympathetic C) central nervous system D) paralumbar E) cerebral cortex
Explain how bryophytes are an intermediate between green algae and terrestrial plants
What will be an ideal response?