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TLS Online TPP Program

#Question id: 1425

During metastasis, cells may undergo an epithelial-to-mesenchymal transition whereby there is a(n):

#Unit 4. Cell Communication and Cell Signaling

  1. increase in cell polarity.

  2. loss of cell-cell-adhesion.

  3. down-regulation in the expression of the Snail and Twist transcription factors.

  4. decrease the production of proteases that digest the basement membrane

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TLS Online TPP Program

#Question id: 4849

#Unit 8. Inheritance Biology

When F1generation of a dihybrid is allowed to test cross, the expected ratio is of genotype when complete linkage?
TLS Online TPP Program

#Question id: 26497

#Unit 3. Fundamental Processes

There are three type of Splicing signals 1. Major U2-type or GU-AG introns 2. Minor U12-type or AU-AC introns & 3. Minor U12-type with GU-AG introns (hybrid type), which of the following is responsible for the recognition of branch point sequence UACUAAC?
TLS Online TPP Program

#Question id: 3395

#Unit 11. Evolution and Behavior

The Hardy-Weinberg principle states that allele frequencies in a population will remain constant over generations if certain assumptions are met.

A. Random mating

B. Sexual selection

C. Migration

D. Large population size

E. Reproductive isolated from other population

F. Linkage of many genes

Which of the above factors will cause changes in allele frequencies overgenerations?
TLS Online TPP Program

#Question id: 31335

#Unit 2. Cellular Organization

The following statements are made with reference to  SNARE proteins & membrane fusion reactions in vesicle transport. Which of the following statement is incorrect?
TLS Online TPP Program

#Question id: 5581

#Unit 5. Developmental Biology

In humans, an individual with an XXY chromosomal complement will develop as