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TLS Online TPP Program

#Question id: 8692

Which of the following statements is accurate with regard to a phylogeny, as represented by a phylogenetic tree?

#SCPH06 I Botany
  1. Descendant groups (branches) from the same node likely share many derived characters.
  2. A monophyletic group can be properly based on convergent features.
  3. The ancestral group often has all the derived characters of the descendant species.
  4. Shared ancestral characters are excellent traits to use in developing a phylogeny.
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TLS Online TPP Program

#Question id: 3883

#SCPH06 I Botany

Which of the following is correct about reverse transcriptase:
TLS Online TPP Program

#Question id: 5086

#SCPH28 | Zoology

Cells move to new positions as an embryo establishes its three germ tissue layers during ________.
TLS Online TPP Program

#Question id: 10877

#SCPH28 | Zoology

A 27-year-old man is breathing quietly. He then inhales as much air as possible and exhales as much air as he can, producing the spirogram shown in the previous figure. What is his expiratory reserve volume (in liters)? 
TLS Online TPP Program

#Question id: 5536

#I Life Science/ Life Sciences Group – I-V

Which of the following is not related with the spot of invagination during gastrulation?
TLS Online TPP Program

#Question id: 10961

#I Life Science/ Life Sciences Group – I-V

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?