Over the past 12 weeks, a 75-year-old man with a moderate aortic stenosis has developed shortness of breath and chest pains during exertion. He appears pale. Test of his stool for blood is positive. Laboratory studies show the following: hemoglobin 7.2 g/dL, and mean corpuscular volume 75. A blood smear shows microcytic, hypochromic erythrocytes. Which of the following is the most likely diagnosis?

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#Question id: 5076

#Unit 5. Developmental Biology

Homeotic genes are responsible for:

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#Question id: 24449

#Unit 13. Methods in Biology

A 10-year-old boy was diagnosed with childhood absence epilepsy. His EEG showed a bilateral synchronous, symmetrical 3-Hz spike-and-wave discharge. Absence seizures

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#Question id: 3666

#Unit 3. Fundamental Processes

RNA-directed RNA polymerase, used in replication of some RNA viruses termed as:

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#Question id: 5045

#Unit 5. Developmental Biology

When the four blastomere pairs of the 8-cell embryo are dissociated, each forms the structures it would have formed had it remained in the embryo, that means it undergoes to-

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#Question id: 15752

#Unit 12. Applied Biology

Match the following

Column I Column II

I. Auxin                     a. Somatic embryogenesis

II. Cytokinin              b. Root

III. GA3                      c. Continued growth

IV. Abscisic acid      d. Shoot