TLS Online TPP Program

#Question id: 1704


The single best unique description of the interaction of the αβ T-cell receptor with peptide-MHC is that it:

#I Life Science/ Life Sciences Group – I-V
  1. Involves non-covalent forces

  2. Results in T-cell activation

  3. Requires the peptide to be presented by MHC class I

  4. Involves CDR (complementarity-determining region) binding to both peptide and MHC

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TLS Online TPP Program

#Question id: 5430

#SCPH28 | Zoology

A plant height in Maize is control by 3 pair of polygene .Two varieties of maize averaging 120 and 60 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 40 inches in height. What is proportional of F2 progeny that is display phenotype either 120 cm or 60 cm height?

TLS Online TPP Program

#Question id: 5431

#SCPH06 I Botany

Plant having height 6 cm are allowed to cross with plant having height 2 cm , all F1 progeny having height uniform 4 cm were allowed selfing to produced F2 progeny in which 3 plant out of  8 having height  4 cm . what are number of polygene involve in that trait ?

TLS Online TPP Program

#Question id: 5431

#SCPH28 | Zoology

Plant having height 6 cm are allowed to cross with plant having height 2 cm , all F1 progeny having height uniform 4 cm were allowed selfing to produced F2 progeny in which 3 plant out of  8 having height  4 cm . what are number of polygene involve in that trait ?

TLS Online TPP Program

#Question id: 5432

#SCPH06 I Botany

which of the following are not feature of polygenic inheritance ?

TLS Online TPP Program

#Question id: 5432

#SCPH28 | Zoology

which of the following are not feature of polygenic inheritance ?

TLS Online TPP Program

#Question id: 5433

#SCPH06 I Botany

Two varieties of maize averaging 120 and 80 inches in height, respectively, are crossed. The F1 progeny is quite uniform averaging 100 inches in height. If height is control by 3 pair of polygene, what is proportional of averaging phenotype in their F2 progeny?