The following is the inheritance pattern of a trait under observation:

(i) The trait often follow cris cross inheritance 

(iii) Unaffected father born to affected daughter

The trait is likely to be

TLS Online TPP Program

#Question id: 16115

#SCPH28 | Zoology

Cold environmental temperatures:

TLS Online TPP Program

#Question id: 2640

#SCPH05 I Biotechnology

Which of these properties do not agree with trp operon attenuator?

TLS Online TPP Program

#Question id: 16125

#SCPH06 I Botany

You are studying regulation of the yeast enzyme glutamine synthetase (GS), which is encoded by the GLN1 gene. You have isolated two mutants, designated gln2– and gln3–, that give decreased GS activity. Mating of either gln2– or gln3– haploids to wild type produces heterozygous diploids that show normal amounts of GS expression. When you cross either a gln2– or gln3– haploid to a gln1– strain the resulting diploids show normal expression of GS.              

From these experiments,  Classify  the  gln2– and gln3– mutations in terms of their basic genetic properties explaining the rationale behind your conclusions. Based on these properties make a proposal for the types of regulatory functions affected by the gln2– and gln3– mutations.

TLS Online TPP Program

#Question id: 3868

#SCPH28 | Zoology

The sigma factor of E. coli RNA polymerase: 

TLS Online TPP Program

#Question id: 4968

#SCPH06 I Botany

Which of these observations fails to support the endosymbiotic theory for the origin of eukaryotic cells?