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TLS Online TPP Program

#Question id: 5692

Aneuploids can be produced several ways except

#SCPH06 I Botany

  1. chromosome may be lost in the course of mitosis or meiosis

  2. small chromosome generated by a Robertsonian translocation may be lost in mitosis or meiosis,

  3. may arise through nondisjunction, the failure of   homologous chromosomes or sister chromatids to separate in meiosis or mitosis

  4. inversion of chromosomal segment including centromere

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TLS Online TPP Program

#Question id: 2677

#SCPH05 I Biotechnology

Why is the transcription of structural genes of the trp operon turned off in the presence of tryptophan?
TLS Online TPP Program

#Question id: 2677

#SCPH06 I Botany

Why is the transcription of structural genes of the trp operon turned off in the presence of tryptophan?
TLS Online TPP Program

#Question id: 2678

#SCPH05 I Biotechnology

Insertional inactivation of the lacZ gene on a plasmid can be used to screen for recombinants on a plate containing:
TLS Online TPP Program

#Question id: 2678

#SCPH06 I Botany

Insertional inactivation of the lacZ gene on a plasmid can be used to screen for recombinants on a plate containing:
TLS Online TPP Program

#Question id: 2679

#SCPH05 I Biotechnology

When the same region, or locus, of a chromosome has two (or more) slightly different DNA sequences in different chromosomes or individuals of the same species, these are described as
TLS Online TPP Program

#Question id: 2679

#SCPH06 I Botany

When the same region, or locus, of a chromosome has two (or more) slightly different DNA sequences in different chromosomes or individuals of the same species, these are described as