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#Question id: 3294


Which one of these processes describes bottleneck effect?

#Section 3: Genetics, Cellular and Molecular Biology
  1. Chance events that change allele frequency

  2. alleles transferred to the next generation in portions that differ from previous generation

  3. transfer of alleles in and out of a population due to movement of fertile individuals

  4. sudden change in environments that alters gene frequency of a populationa

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TLS Online TPP Program

#Question id: 4751

#Section 3: Genetics, Cellular and Molecular Biology

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

#Section 3: Genetics, Cellular and Molecular Biology

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

#Section 3: Genetics, Cellular and Molecular Biology

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?

TLS Online TPP Program

#Question id: 4754

#Section 3: Genetics, Cellular and Molecular Biology

Allele A is epistatic to allele B. Which of the following statement are incorrect?

TLS Online TPP Program

#Question id: 4755

#Section 3: Genetics, Cellular and Molecular Biology

When two albino snails were crossed, all of the F1 were pigmented. All F1 intercross would results

TLS Online TPP Program

#Question id: 4756

#Section 3: Genetics, Cellular and Molecular Biology

In summer squash, white colour fruit (W) is dominant over yellow colour (w) and disc-shaped phenotype (D) is dominant over sphere-shaped phenotype (d). Determine the genotype of the parents gives 3/8 white, sphere, 3/8 white, Disk, 1/8 Yellow, Disk and 1/8 Yellow, Sphere?