Question
Retroviruses do not follow central Dogma. Comment.
✓
Answer
Francis and Crick proposed the central dogma in molecular biology. According to this, genetic information flows from DNA → RNA → Protein. In retroviruses, genetic information flows in reverse direction, i.e. Protein → RNA → DNA. Hence, it is said that retroviruses do not follow central dogma. The process followed by retroviruses is also called reverse transcription because of the opposite sequence of the process involved.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Write causative agent, two symptoms and mode of transmission of typhoid.
- Why do organisms like algae and fungi shift from asexual mode of reproduction to sexual mode?
- What is juvenile phase in organisms?
A heavily bleeding and bruised road accident victim was brought to a nursing home. The doctor immediately gave him an injection to protect him against a deadly disease.
- What did the doctor inject into the patient's body?
- How do you think this injection would protect the patient against the disease?
- Name the disease against which this injection was given and the kind of immunity it provides.
Identify a, b, c and d in the following table:
|
S.No.
|
Name of the human disease
|
Name of the causal bacteria/virus
|
Specific organ or its part affected
|
|
1.
|
Typhoid
|
Salmonella typhi
|
a
|
|
2.
|
Common cold
|
b
|
c
|
|
3.
|
Pneumonia
|
Streptococcus pneumoniae
|
d
|
What is seed dormancy? What is its significance?
How do the oral pills help in birth control? Name common pills used.
Lifestyle diseases are increasing alarmingly in India. We are also dealing with large scale malnutrition in the population. Is there any method by which we can address both these problems?
Differentiate between multiple allelism and pleiotropy with the help of an example of each.
Given above is a schematic representation of the lac operon in E.coli. What is the significant role of 'i' gene in switching 'on' or 'off' the operon?
Name two types of particulate pollutants found in air. Add a note on ill effects of the same on human health. OR Describe any $2$ particulate and gaseous pollutants.
→