TLS Online TPP Program

#Question id: 2991


Early observations of a cultured cell line indicated that the cells did not exhibit either density-dependent inhibition or anchorage dependence. What do these observations suggest about this cell line?

#Unit 2. Cellular Organization
  1. The cells are unable to form spindle microtubules.

  2. The cells follow an altered series of cell cycle phases.

  3. The cells show characteristics of tumors.

  4. The cells have nonfunctional MPF.

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TLS Online TPP Program

#Question id: 22952

#Unit 5. Developmental Biology

Many of the genes that determine floral organ identity are MADS box genes, Except 

TLS Online TPP Program

#Question id: 22953

#Unit 5. Developmental Biology

The MADS box gene form tetramers that bind to 

TLS Online TPP Program

#Question id: 22954

#Unit 5. Developmental Biology

According to the which Model, floral organ identity is regulated by tetrameric complexes of the ABCE proteins

TLS Online TPP Program

#Question id: 22955

#Unit 5. Developmental Biology

Based On ABC model during flower development, loss of class A activity results the formation of only stamen and carpel. Which of the flowering floral organs identity genes controls the class  A activity ?

TLS Online TPP Program

#Question id: 22956

#Unit 5. Developmental Biology

Individual and overlapping expression of homeotic genes in adjacent whorl of a flower determine the pattern of floral organ development. In an Arabidopsis mutant, floral organs are distributed as follows
WHORL 1 Sepal
WHORL 2 Petal
WHORL 3 Petal
WHORL 4 Sepal
Loss of function mutation in which one of the following genes would have caused the above pattern of floral organs development 

TLS Online TPP Program

#Question id: 22957

#Unit 5. Developmental Biology

floral organ development is controlled by overlapping expressions of A class , B class and C class genes in different whorls. In an Arabidopsis mutant, the floral whorls had following pattern:
Sepal àSepal àcarpel àcarpel 
Mutation in which one of the following class of gene causes above pattern.