Practice Questions

TLS Online TPP Program

#Question id: 3833

Regarding DNA replication, which, if any, of the following statements is incorrect?

#Unit 3. Fundamental Processes

DNA replication is said to be semi-conservative because for each DNA helix only one strand serves as a template for new DNA synthesis.
The two DNA strands of the parental DNA helix are unwound using a DNA helicase.
The replication fork marks the point at which DNA is actively being replicated from a single DNA duplex to form new DNA strands.
The synthesis of new DNA strands always proceeds in the 5’ → 3’ direction.

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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

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.

TLS Online TPP Program

#Question id: 22958

#Unit 5. Developmental Biology

Which of the following statement is correct regarding to the flower development in Arabidopsis?