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TLS Online TPP Program

#Question id: 3627

A cross is made between two plants with white flowers. All the F1 progeny had red colored flower. This is because of

#SCPH01 Biochemistry

  1. complementation        

  2. recombination

  3. translocation           

  4. Reversion

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TLS Online TPP Program

#Question id: 15876

#SCPH05 I Biotechnology

The following growth regulators (GRs)- auxins, cytokinins, ABA and GA3 are used in plant tissue culture, The common range of concentrations used are as follows:
GROWTH REGULATOR(GRs)                                     CONCENTERATION
A) AUXIN                                                                       i) 0.1-3 mg/L
B) GA3                                                                          ii) 0.2 mg/L
C) CYTOKININ                                                           iii) 0.1-1 mg/L
D) ABA

TLS Online TPP Program

#Question id: 4820

#SCPH28 | Zoology

Which of the following gametes are produced in grater proportional by an individual of genotype Ab/aB if the genes are in the same chromosome with some recombination between them?
TLS Online TPP Program

#Question id: 10571

#SCPH06 I Botany

Uniform spacing patterns in plants such as the creosote bush are most often associated with
TLS Online TPP Program

#Question id: 565

#SCPH28 | Zoology

A transition-state analog:
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#Question id: 15817

#SCPH01 Biochemistry

You and your lab partner have isolated 20 new mutant yeast strains that are defective in synthesis of threonine, an amino acid. These Thr- mutants do not grow on minimal medium, but they do grow on minimal medium supplemented with threonine. Ten of your Thr- mutants (numbered 1 through 10) were isolated in a strain of mating type a (MAT a). The other 10 Thrmutants (numbered 11 through 20) were isolated in a strain of mating type α (MAT α). You and your lab partner cross each of the MAT a strains to each of the MAT α strains, and you include crosses to the appropriate wild-type strains. Your experimental observations are shown in the table below, where (-) indicates diploids that did not grow on minimal medium and (+) indicates diploids that did grow on minimal medium

Based on these experiments, what is the minimum number of genes required for threonine synthesis?