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TLS Online TPP Program

#Question id: 5131

Differentiated cells express the genes and proteins characteristic of their final identity in the adult, and that identity can be altered only under special circumstances. How does the concept of differentiation, as described here, differ from the concept of determination?

#Unit 5. Developmental Biology

Determined cells have begun to differentiate, but are not fully differentiated.
Determined cells are embryonic cells that will give rise to all the cell types of the adult organism, but have not yet begun to express the genes and proteins characteristic of their final fates.
Determined cells will continue to follow their fate if grafted into a different place in a host embryo, even though they do not yet express the genes and proteins characteristic of their final fate.
Determined cells are embryonic cells that will form certain cell types and structures if development is allowed to proceed normally, but will alter their development in response to their location if transplanted to a different place in a host embryo.

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TLS Online TPP Program

#Question id: 13109

#Unit 13. Methods in Biology

With the help of DNA fingerprinting which can be used to determine paternity. There are three babies (Baby A, Baby B and Baby C) in a maternity ward, and three sets of confused and worried parents. (Father and Mother #1 are a couple, as are Father and Mother #2, and Father and Mother #3.)

You do each PCR reaction on chromosome 15 and load each one into a separate well of an agarose gel, and then run the gel.

which number of repeats did Baby C inherit from his mother?

TLS Online TPP Program

#Question id: 13110

#Unit 13. Methods in Biology

With the help of DNA fingerprinting which can be used to determine paternity. There are three babies (Baby A, Baby B and Baby C) in a maternity ward, and three sets of confused and worried parents. (Father and Mother #1 are a couple, as are Father and Mother #2, and Father and Mother #3.)

You do each PCR reaction on chromosome 15 and load each one into a separate well of an agarose gel, and then run the gel.

Match the babies up with their actual parents.

TLS Online TPP Program

#Question id: 15181

#Unit 13. Methods in Biology

In which kind of electrophoresis, analyte can move in either direction?

1. Gel Electrophoresis

3. Free Solution

TLS Online TPP Program

#Question id: 15182

#Unit 13. Methods in Biology

Which of the following types of effect are responsible for lowering the efficiency of electrophoresis?

TLS Online TPP Program

#Question id: 15183

#Unit 13. Methods in Biology

When in a gel more Joule heat is produced than can be dissipated, the temperature in the middle of the gel is higher than at the lateral edges. This causes higher mobility of the ions in the center, resulting in an uneven distribution of the zones. The zones bend up at the two lateral sides, causing

TLS Online TPP Program

#Question id: 15184

#Unit 13. Methods in Biology

Phenomenon of Electroendosmosis is largely applicable in

A. Gel Electrophoresis

C. Free Solution