TLS Online TPP Program

#Question id: 1159


Cholera toxin can make you sick through overactivation of a Gs pathway even if your body stops making the ligand associated with activation of the pathway. Knowing this, which of the following CANNOT be true about cholera toxin?

#Unit 4. Cell Communication and Cell Signaling
  1. It chemically modifies the Gαs protein.

  2. Cholera toxin activates a ligand-activated G protein-coupled receptor.

  3. It prevents hydrolysis of bound GTP to GDP.

  4. It leads to continuous activation of adenylyl cyclase.

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TLS Online TPP Program

#Question id: 4805

#Unit 8. Inheritance Biology

What is maximum parental frequency for two genes if single cross over within two strands?

TLS Online TPP Program

#Question id: 4806

#Unit 8. Inheritance Biology

Four incompletely link gene as cis configuration, Heterozygote ABCD/abcd produced a gamete with genotype AbCD is due to

TLS Online TPP Program

#Question id: 4807

#Unit 8. Inheritance Biology

Three incompletely link marker gene was found. There is a marker A gene present in middle. Cross between aaBBcc X AAbbCC to produce heterozygous were allowed test cross, which of the following test cross offspring should be least frequent?

TLS Online TPP Program

#Question id: 4808

#Unit 8. Inheritance Biology

When F1 female Drosophila of the genotype AaBbCc is test crossed, ( Gene A and B located at 10 map unit in transe configuration but gene C are independently assort for both gene. Which of the following test cross progeny that is that is more frequent?

TLS Online TPP Program

#Question id: 4809

#Unit 8. Inheritance Biology

The upper most following figure above shows the locations of four genes on the genetic map of an organism; the lower figure shows the locations of the same four genes on a physical map derived from the nucleotide sequence of the DNA of that organism. The maps are not identical because

TLS Online TPP Program

#Question id: 4810

#Unit 8. Inheritance Biology

In a haploid organism, the C and D loci are 8 m.u. apart. From a cross C d X c D, which of the following proportion following progeny classes: (a) C D; (b) c d; (c) C d