TLS Online TPP Program

#Question id: 4340


There is a mutation that is found in E. coli in the repressor that results in a molecule known as a super-repressor because it represses the lac operon permanently. Which of the following characteristics would you expect to observe in such a mutant?

#SCPH01 Biochemistry
  1. It cannot bind to the operator.

  2. It cannot make a functional repressor.

  3. It cannot bind to the inducer.

  4. It makes a repressor that binds CAP.

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TLS Online TPP Program

#Question id: 4750

#SCPH12 I Genetics

Which of the following is similarity about Sex-limited Characteristics (SLC) and genomic imprinting (GI)?

TLS Online TPP Program

#Question id: 4751

#SCPH01 Biochemistry

In the following example, 3 independently assorting genes are known to govern coat color in mice. The genotype of few of the coat colors is given below:

Agouti: A-B-C- Black: aa B-C - Albino: -- -- cc

What will be the expected frequency of abino, in progeny from crosses of  AaBbCc with albino of the genotype aabbcc?

TLS Online TPP Program

#Question id: 4751

#SCPH12 I Genetics

In the following example, 3 independently assorting genes are known to govern coat color in mice. The genotype of few of the coat colors is given below:

Agouti: A-B-C- Black: aa B-C - Albino: -- -- cc

What will be the expected frequency of abino, in progeny from crosses of  AaBbCc with albino of the genotype aabbcc?

TLS Online TPP Program

#Question id: 4752

#SCPH01 Biochemistry

Red-green color blindness is caused by a sex-linked recessive allele. A color-blind man marries a woman with normal vision whose father was color-blind. What is the probability that they will have a color-blind daughter? What is the probability that their first son will be color-blind respectively?

TLS Online TPP Program

#Question id: 4752

#SCPH12 I Genetics

Red-green color blindness is caused by a sex-linked recessive allele. A color-blind man marries a woman with normal vision whose father was color-blind. What is the probability that they will have a color-blind daughter? What is the probability that their first son will be color-blind respectively?

TLS Online TPP Program

#Question id: 4753

#SCPH01 Biochemistry

Pattern baldness in humans is a sex-influenced trait that is autosomes dominant in males and recessive in females. What is genotype of both parents with normal hair had one son with pattern baldness and another son is normal hair?