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TLS Online TPP Program

#Question id: 1035

A new drug is developed that inhibits formation of the flagellar filament by impairing production of the protein flagellin. Is this going to be a good drug?

#Unit 4. Cell Communication and Cell Signaling

  1. Potentially-it would definitely only impair bacteria, but wouldn't matter for the ones that don't use a flagellum to move around.

  2. Potentially-if it could be shown that it also didn't impair the production of the eukaryotic flagellum.

  3. No-our eukaryotic cells depend on flagella to move around in our body, and this would impair that function.

  4. No-bacterial flagella are produced using microtubules, not the protein flagellin. This drug would be useless in eliminating bacteria.

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TLS Online TPP Program

#Question id: 5350

#Unit 8. Inheritance Biology

Which of the following most probable mode of genetic disorder?
TLS Online TPP Program

#Question id: 5351

#Unit 8. Inheritance Biology

Consider the accompanying pedigree of a rare autosomal recessive disease, PKU. (Assume individual coming from outside that is homozygous for normal allele) What is the probability of child showing trait of A and B individuals?
TLS Online TPP Program

#Question id: 5352

#Unit 8. Inheritance Biology

Marriage occurs between individuals III-3 and III-6, what is the probability couple; son would be affected with the trait?
TLS Online TPP Program

#Question id: 5353

#Unit 8. Inheritance Biology

Which of following is not a mode of inheritance, but female parents (I-1) carry only normal allele?

A. X link recessive              b. Autosomal recessive

c. Autosomal dominant      d. X- link dominant
TLS Online TPP Program

#Question id: 5354

#Unit 8. Inheritance Biology

Eye color gene link with X chromosome, If red eye color gene is dominant over white eye color gene. Which of the following genetic cross and their respective offspring is not correlated?

Genetic cross

Phenotype of offspring

1

Heterozygous Red eye female  X   Red eye Male

All male red eye

2

Heterozygous Red eye female  X   white  eye Male 

 Male either red  or white eye

3

Homozygous Red eye female  X   white eye Male 

All female red eye

4

Homozygous Red eye female  X   Red  eye Male

All male red eye

TLS Online TPP Program

#Question id: 5355

#Unit 8. Inheritance Biology

The characteristics of X-linked inheritance as following statement are correct

A- Reciprocal crosses resulting in different phenotypic ratios in their offspring 

B- Heterozygous females transmit each X-linked allele to approximately half their daughters and half their sons

C- Males that inherit an X-linked recessive allele always exhibit the recessive trait

D-Females that inherit an X-linked recessive allele from male always exhibit the dominant trait

E- Males do not transmit each X-linked allele to their sons