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TLS Online TPP Program

#Question id: 4902

Leber hereditary optic neuropathy (LHON) is mitochondrial diseases present in family. Which of the following observation is correct?

#Unit 8. Inheritance Biology

  1. LHON present in female only, none of the male affected with this diseased

  2. LHON trait is passed from mother to all children, sons and daughters alike.

  3. LHON trait shows criss cross inheritance

  4. LHON trait is passed from father to all children

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TLS Online TPP Program

#Question id: 23707

#Unit 13. Methods in Biology

Which of the following separates molecules by movement due to size and electrical charge?
TLS Online TPP Program

#Question id: 8697

#Unit 9. Diversity of Life Forms

Use the figure to answer the following question.

Which extinct species should be the best candidate to serve as the outgroup for the clade whose common ancestor occurs at position 2 in the figure?
TLS Online TPP Program

#Question id: 30068

#Unit 7. System Physiology – Animal

Norepinephrine secreted by the sympathetic endings binds to β1 receptors, and the resulting:
TLS Online TPP Program

#Question id: 28361

#Unit 5. Developmental Biology

 Which of the following protein is involve to the stabilization of Nanos localization complex ?
TLS Online TPP Program

#Question id: 4859

#Unit 8. Inheritance Biology

How would one explain a testcross involving F1 dihybrid flies in which more parental-type offspring than recombinant-type offspring are produced?