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#Question id: 1743


The main costimulatory signal for activation of resting T-cells is provided by ligation of:

#SCPH01 Biochemistry
  1. CD28

  2. Surface Ig

  3. LFA-1

  4. VLA-4


Answer:- Option(s): 1


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#Question id: 5741

#SCPH28 | Zoology

In a mammal 2 Barr bodies are observed.  How many X chromosomes does the organism have?

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#Question id: 5742

#SCPH06 I Botany

When an allotetraploid (AABB) is backcrossed to one of its progenitor species (AA), a sterile progeny is produced.  The genomic composition of this sterile individual can be best represented by

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#Question id: 5742

#SCPH28 | Zoology

When an allotetraploid (AABB) is backcrossed to one of its progenitor species (AA), a sterile progeny is produced.  The genomic composition of this sterile individual can be best represented by

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#Question id: 5743

#SCPH06 I Botany

Euploidy is

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#Question id: 5743

#SCPH28 | Zoology

Euploidy is

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#Question id: 5744

#SCPH06 I Botany

The basic diploid chromosome number in Rye Secale cereale is 14. A new species of rye is found that has 28 chromosome species. This species is said to be

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