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TLS Online TPP Program

#Question id: 6961

Do HOX genes play a role in the development of C. elegans?

#5. Developmental Biology
  1. No, C. elegans does not have HOX genes
  2. No, C. elegans has HOX genes but none of them are used during development
  3. Yes, C. elegans has 4 clusters of HOX genes, just like mammals, that are required for specification of the identity of structures during embryogenesis
  4. Yes, but only one HOX gene is required in the embryo; the others provide positional identity in the larva
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TLS Online TPP Program

#Question id: 10955

#7. System Physiology – Animal

A 2-year-old boy bruises easily and has previously had bleeding gums. The maternal grandfather has a bleeding disorder. His physical examination shows several small bruises on the legs. Of which coagulation factor would you suspect this patient to be deficient?
TLS Online TPP Program

#Question id: 314

#1. Molecules and their Interaction Relevant to Biology

Which statement explains the cleaning action of soap on greasy dishes?
TLS Online TPP Program

#Question id: 8961

#9. Diversity of Life Forms

What does recent evidence from molecular systematics reveal about the relationship between grades and clades?
TLS Online TPP Program

#Question id: 4567

#11. Evolution and Behavior

Charles Darwin was the first person to propose
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#Question id: 753

#1. Molecules and their Interaction Relevant to Biology

The renaturation of regions of complementarity between different nucleic acid strands is known as___________