Which of the following techniques would be used to prepare a fetal karyotype to detect trisomy 21 (Down syndrome)?
A) ASO test
B) RFLP analysis
C) Microarray analysis
D) Chorionic villus sampling
E) STR analysis
D
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Infectious hepatitis is caused by infection with hepatitis ________ virus
A) A B) B C) C D) E
What is true of the hormone glucagon? Check all that apply.
_____ It helps to maintain homeostatic levels of glucose. _____ It is synthesized by the pancreas when blood sugar levels decrease. _____ It is synthesized in the same endocrine gland that secretes insulin. _____ It stimulates appetite.
Cytotoxic T cells destroy cancerous cells by
A. forming the membrane attack complex. B. releasing vesicles containing perforin. C. activating natural killer cells. D. opsonization. E. secreting cytokines.
Assume that an organism has a diploid chromosome number of 14. There would be 28 chromosomes in a tetraploid
Indicate whether the statement is true or false