TLS Online TPP Program

#Question id: 4347


According to the lac operon model proposed by Jacob and Monod, what is predicted to occur if the operator is removed from the operon?

#Section 3: Genetics, Cellular and Molecular Biology
  1. The lac operon would be transcribed continuously.

  2. Only lacZ would be transcribed.

  3. Only lacY would be transcribed.

  4. Galactosidase permease would be produced, but would be incapable of transporting lactose.

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TLS Online TPP Program

#Question id: 3550

#Section 3: Genetics, Cellular and Molecular Biology

A man with type A blood and colorblindness marries a woman with type A blood and normal. Their first female child has type O blood and colorblindness. What is the probability of next female child will be A blood group and colorblindness?

TLS Online TPP Program

#Question id: 3551

#Section 3: Genetics, Cellular and Molecular Biology

In angiosperm plant, assume that the male parent has an AA Bb genotype, and that the female parent has an aa BB genotype. What is genotype in endosperm nucleus, after reproduction between these two plants?

TLS Online TPP Program

#Question id: 3552

#Section 3: Genetics, Cellular and Molecular Biology

In corn, three dominant alleles, called A, C, and R, must be present to produce colored seeds. Which of the following genotype would produce 25 % color seeded plant, When cross with Aaccrr?

TLS Online TPP Program

#Question id: 3553

#Section 3: Genetics, Cellular and Molecular Biology

Diploid cell genotype AaBb undergoes meiosis that generates new combinations of alleles by which mechanism when gene A and B located on the same chromosome?  

TLS Online TPP Program

#Question id: 3554

#Section 3: Genetics, Cellular and Molecular Biology

The diploid cell with 6 pairs of chromosomes can divide. How many possible different combinations of maternal and paternal chromosomes in metaphase?

TLS Online TPP Program

#Question id: 3556

#Section 3: Genetics, Cellular and Molecular Biology

Flower color in plant follows incomplete dominance. Cross between AA and aa results all F1 offspring are uniform were allowed to cross with AA genotype. What will be phenotype ratio?