Practice Questions

TLS Online TPP Program

#Question id: 2008

An immune response to a tissue graft will differ from an immune response to a bacterium because

#Unit 4. Cell Communication and Cell Signaling

MHC molecules of the donor may stimulate rejection of the graft tissue.
the tissue graft, unlike the bacterium, is isolated from the circulation and will not enter into an immune response.
a response to the graft will involve T cells and a response to the bacterium will not.
a bacterium cannot escape the immune system by replicating inside normal body cells.

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TLS Online TPP Program

#Question id: 33693

#Unit 2. Cellular Organization

Satellite DNA arise due to

TLS Online TPP Program

#Question id: 33694

#Unit 2. Cellular Organization

Find true & false statements

A. Gene clusters mispairing between nonallelic loci can cause unequal crossing over.

B. Unequal crossing over produces a deletion in one recombinant chromosome and a corresponding duplication in the other.

C. Different thalassemias are caused by various duplication that eliminate a- or b-globin genes.

TLS Online TPP Program

#Question id: 33695

#Unit 2. Cellular Organization

if an individual has only one α gene, the excess β chains form the unusual tetramer b4, which causes

TLS Online TPP Program

#Question id: 33696

#Unit 2. Cellular Organization

The Hb Lepore chains are produced due to unequal crossing over between

TLS Online TPP Program

#Question id: 33697

#Unit 2. Cellular Organization

Hb Kenya, another fused hemoglobin. The fusion must have resulted from unequal crossing over between

TLS Online TPP Program

#Question id: 33698

#Unit 2. Cellular Organization

Globin gene clusters are found on chromosomes