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TLS Online TPP Program

#Question id: 5212

Barbara McClintock, famous for discovering that genes could move within genomes, had her meticulous work ignored for nearly 4 decades, but eventually won the Nobel Prize. Why was her work so distrusted?

#Unit 11. Evolution and Behavior

  1. The work of women scientists was still not allowed to be published.

  2. Geneticists did not want to lose their cherished notions of DNA stability.

  3. There were too many alternative explanations for transposition.

  4. She allowed no one else to duplicate her work.

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TLS Online TPP Program

#Question id: 23752

#Unit 1. Molecules and their Interaction Relevant to Biology

Which one of the following is always associated with a 'tree'?
TLS Online TPP Program

#Question id: 7262

#Unit 5. Developmental Biology

Match the following Gene (column I) with their function (column II).

   

 Column I

 Column II

A. sex-lethal

i. facilitates transcription from the X chromosome

B. double-sex

ii. help  to generate the female phenotype by splicing the doublesex gene

C. msl

iii. encodes an RNA splicing factor

D. transformer

iv. activate wingless gene in female

 

Which of the following is correct?
TLS Online TPP Program

#Question id: 12041

#Unit 7. System Physiology – Animal

Which of the following is not normally found in abundance in the portal blood?
TLS Online TPP Program

#Question id: 323

#Unit 1. Molecules and their Interaction Relevant to Biology

When the atoms involved in a covalent bond have the same electronegativity, what type of bond results?
TLS Online TPP Program

#Question id: 15763

#Unit 5. Developmental Biology

The strategy, in which a stem cell and a developmentally committed cell are produced at each division, termed as
A. Asymmetric stem cell division.
B. Symmetric stem cell division
C. Single stem cell asymmetry .
D. Population asymmetry