-
Engineering and Architecture
Exams
Colleges
Predictors
Resources
-
Computer Application and IT
Quick Links
Colleges
-
Pharmacy
Colleges
Resources
-
Hospitality and Tourism
Colleges
Resources
Diploma Colleges
-
Competition
Other Exams
Resources
-
School
Exams
Top Schools
Products & Resources
-
Study Abroad
Top Countries
Resources
-
Arts, Commerce & Sciences
Colleges
Upcoming Events
Resources
-
Management and Business Administration
Exams
Colleges & Courses
Predictors
-
Learn
Law Preparation
MBA Preparation
Engineering Preparation
Medical Preparation
-
Online Courses and Certifications
Top Streams
Specializations
- Digital Marketing Certification Courses
- Cyber Security Certification Courses
- Artificial Intelligence Certification Courses
- Business Analytics Certification Courses
- Data Science Certification Courses
- Cloud Computing Certification Courses
- Machine Learning Certification Courses
- View All Certification Courses
Resources
-
Medicine and Allied Sciences
Colleges
Predictors
Resources
-
Law
Resources
Colleges
-
Animation and Design
Exams
Predictors & Articles
Colleges
Resources
-
Media, Mass Communication and Journalism
Colleges
Resources
-
Finance & Accounts
Top Courses & Careers
Colleges
Get Answers to all your Questions
- #Genetics and Evolution
- #Medical
- #National Eligilibility Cum Entrance Test
- #National Eligibility Cum Entrance Test
- #Class 12
- #Biology
Denaturation profiles of DNA are shown below. The differences in the profiles arise because
The DNA is single stranded but of different sizes.
A + T content of A > B > C and the DNA are from complex genomes.
G + C content of C > B > A in DNA of comparable sizes isolated from simple genomes.
G + C content is identical but A + T content in A > B > C in DNA of comparable sizes isolated from simple genome
Answers (1)
The differences in the denaturation profiles of DNA arise due to variations in the G+C content among the DNA samples.
The denaturation profile of DNA refers to the temperature at which the double-stranded DNA begins to denature or separate into single strands. This process is known as DNA melting or DNA denaturation. The temperature at which denaturation occurs is influenced by several factors, including the G+C content of the DNA.
DNA molecules with higher G+C content tend to have stronger hydrogen bonding between the G and C nucleotides, resulting in a higher melting temperature (Tm). This means that DNA molecules with a higher G+C content require a higher temperature to denature compared to DNA with lower G+C content.
In the given scenario, the statement suggests that the G+C content of DNA in sample C is higher than that of sample B, and the G+C content of sample B is higher than that of sample A. As a result, the denaturation profile of sample C will have a higher Tm, indicating that it requires a higher temperature to denature compared to sample B. Similarly, sample B will have a higher Tm than sample A.
These differences in denaturation profiles based on G+C content reflect the stability and strength of hydrogen bonding within the DNA molecules. Higher G+C content leads to stronger interactions between complementary strands, requiring more energy (higher temperature) to separate the strands during denaturation.
Hence, the correct answer is option 3.
NEET 2024 Most scoring concepts
- Just Study 32% of the NEET syllabus and Score up to 100% marks
