The early placental membrane has all of the following layers, EXCEPT:
A. Connective Tissue
B. Cytotrophoblasts
C. Endothelium of Fetal Capillaries
D. Endothelium of Maternal Capillaries
E. Syncytiotrophoblasts
Ans: D. Endothelium of Maternal Capillaries
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How did the development of anonymous markers aid in the production of a human genetic map?
A. Anonymous markers are genetic markers that do not cause a detectable phenotype, but can be detected by molecular techniques. The markers correspond to specific and unique chromosomal regions, thereby allowing for the identification and ordering of particular segments of DNA. Such information was essential to the generation of a human genetic map. B. Anonymous markers are genetic markers that cause a detectable phenotype and can't be detected by molecular techniques. The markers correspond to specific and unique chromosomal regions, thereby allowing for the identification and ordering of particular segments of DNA. Such information was essential to the generation of a human genetic map. C. Anonymous markers are genetic markers that do not cause a detectable phenotype, but can be detected by molecular techniques. The markers correspond to specific and unique genetic regions, thereby allowing for the identification and ordering of particular segments of the chromosome. Such information was essential to the generation of a human genetic map.
What are the odds a child will inherit a recessive disorder if both parents are heterozygous?
a. 50% b. 40% c. 25% d. 75% e. 33%
All of the following are true of gene therapy except
a. gene therapy could be used to treat inherited disorders. b. viruses are used to deliver genes to target cells. c. cystic fibrosis has been successfully treated by gene therapy. d. gene addition incorporates an additional gene into target cells. e. gene correction corrects the gene mutation in the target cells.
Which of the following can pass through gap junctions?
a. cAMP and calcium ions b. Insulin and calcium ions c. cAMP and glucose d. Insulin and glucose