5'-TTAGGG-3'
Understanding Telomere Repeat Sequence
Telomeres are protective caps at the ends of chromosomes.
They consist of repetitive nucleotide sequences.
In humans and many other vertebrates, the specific repeat sequence found at the telomeres is essential for maintaining chromosome integrity during cell division.
Identifying the Human Telomere Sequence
The standard repeat sequence for human telomeres is:
- 5'-TTAGGG-3'
This sequence is repeated thousands of times.
Let's examine the options provided:
- Option 1: $5'-TATAAT-3'$ is a promoter sequence element (TATA box).
- Option 2: $5'-TTAGGG-3'$ matches the known human telomere repeat sequence.
- Option 3: $5'-GGGCCC-3'$ is not the standard human telomere repeat.
- Option 4: $5'-AAAAAA-3'$ is not the standard human telomere repeat.
Therefore, the correct repeat sequence of telomere in humans is $5'-TTAGGG-3'$.
Important Questions from Molecular Structure of Genes and Chromosomes
- All pseudogenes DO NOT code for a __________.
- C-value paradox refers to
- DNA sample collected from an unidentified bacterial species (Y) contains 13% of adenine. The G+C content (in percentage) of Y is ________
The contour length of a B-DNA molecule that encodes a bacterial protein of 33 kDa is _________ nm.
Consider the average molecular weight of an amino acid as 110 Da and helix rise per base pair for B-DNA as 0.34 nm.
(Round off to the nearest integer)
- Which of the following methods is/are used for identifying histone modifications?
