TLS Online TPP Program
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TLS Online TPP Program
#Question id: 15247
#Unit 5. Developmental Biology
In the syncytial blastoderm, nuclei in the anterior part of the cell are exposed to ------------- that are not present in the posterior part of the cell, and vice versa.
1. Cytoplasmic determinants
2. Maternal factors
3. Zygotic gene
4. Paracrine signals
TLS Online TPP Program
#Question id: 15279
#Unit 5. Developmental Biology
Which of the following process is essential for successful syncytial specification?
TLS Online TPP Program
#Question id: 15280
#Unit 5. Developmental Biology
The mechanisms governing cell fate specification involves gradients of paracrine factors that regulate gene expression; such factors are called:
TLS Online TPP Program
#Question id: 15281
#Unit 5. Developmental Biology
What is morphogen?
TLS Online TPP Program
#Question id: 15282
#Unit 5. Developmental Biology
what is the difference between morphogen and morphogenetic determinants?
TLS Online TPP Program
#Question id: 15283
#Unit 5. Developmental Biology
Following are certain statements regarding
morphogen gradients and cell specification.
A. Morphogens are always transcription factors
B. Morphogens can be paracrine factors that are produced in one group of cells and travel to another population of cells
C. When the concentration of a morphogen drops below a certain threshold, cells stop differentiating and never get determined to another fate
D. Morphogen gradients are involved in conditional specification
Which combination of the above statements is true?