A palindromic sequence is a nucleic acid sequence in a double-stranded DNA or RNA molecule whereby reading in a certain direction (e.g. 5' to 3') on one strand is identical to the sequence in the same direction (e.g. 5' to 3') on the complementary strand. This definition of palindrome thus depends on complementary strands being palindromic of each other. The meaning of palindrome in the context of genetics is slightly different from the definition used for words and sentences. Since a double helix is formed by two paired antiparallel strands of nucleotides that run in opposite directions, and the nucleotides always pair in the same way (adenine (A) with thymine (T) in DNA or uracil (U) in RNA; cytosine (C) with guanine (G)), a (single-stranded) nucleotide sequence is said to be a palindrome if it is equal to its reverse complement. For example, the DNA sequence ACCTAGGT is palindromic because its nucleotide-by-nucleotide complement is TGGATCCA, and reversing the order of the nucleotides in the complement gives the original sequence. A palindromic nucleotide sequence is capable of forming a hairpin. The stem portion of the hairpin is a pseudo-double stranded portion since the entire hairpin is a part of same (single) strand of nucleic acid. Palindromic motifs are found in most genomes or sets of genetic instructions. They have been specially researched in bacterial chromosomes and in the so-called Bacterial Interspersed Mosaic Elements (BIMEs) scattered over them. In 2008, a genome sequencing project discovered that large portions of the human X and Y chromosomes are arranged as palindromes. A palindromic structure allows the Y chromosome to repair itself by bending over at the middle if one side is damaged. Palindromes also appear to be found frequently in the peptide sequences that make up proteins, but their role in protein function is not clearly known. It has been suggested that the existence of palindromes in peptides might be related to the prevalence of low-complexity regions in proteins, as palindromes are frequently associated with low-complexity sequences. Their prevalence may also be related to the propensity of such sequences to form alpha helices or protein/protein complexes. (Wikipedia).
What is the alternate in sign sequence
π Learn about sequences. A sequence is a list of numbers/values exhibiting a defined pattern. A number/value in a sequence is called a term of the sequence. There are many types of sequence, among which are: arithmetic and geometric sequence. An arithmetic sequence is a sequence in which
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What is the definition of a geometric sequence
π Learn about sequences. A sequence is a list of numbers/values exhibiting a defined pattern. A number/value in a sequence is called a term of the sequence. There are many types of sequence, among which are: arithmetic and geometric sequence. An arithmetic sequence is a sequence in which
From playlist Sequences
π Learn about sequences. A sequence is a list of numbers/values exhibiting a defined pattern. A number/value in a sequence is called a term of the sequence. There are many types of sequence, among which are: arithmetic and geometric sequence. An arithmetic sequence is a sequence in which
From playlist Sequences
What is the difference between finite and infinite sequences
π Learn about sequences. A sequence is a list of numbers/values exhibiting a defined pattern. A number/value in a sequence is called a term of the sequence. There are many types of sequence, among which are: arithmetic and geometric sequence. An arithmetic sequence is a sequence in which
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What is the definition of an arithmetic sequence
π Learn about sequences. A sequence is a list of numbers/values exhibiting a defined pattern. A number/value in a sequence is called a term of the sequence. There are many types of sequence, among which are: arithmetic and geometric sequence. An arithmetic sequence is a sequence in which
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What is the formula for the rule for the nth term of a arithmetic sequence
π Learn about sequences. A sequence is a list of numbers/values exhibiting a defined pattern. A number/value in a sequence is called a term of the sequence. There are many types of sequence, among which are: arithmetic and geometric sequence. An arithmetic sequence is a sequence in which
From playlist Sequences
What is an arithmetic sequence
π Learn about sequences. A sequence is a list of numbers/values exhibiting a defined pattern. A number/value in a sequence is called a term of the sequence. There are many types of sequence, among which are: arithmetic and geometric sequence. An arithmetic sequence is a sequence in which
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Lecture 7 - Suffix Arrays and Assembly
This is Lecture 7 of the CSE549 (Computational Biology) course taught by Professor Steven Skiena [http://www.cs.sunysb.edu/~skiena/] at Stony Brook University in 2010. The lecture slides are available at: http://www.algorithm.cs.sunysb.edu/computationalbiology/pdf/lecture7.pdf More infor
From playlist CSE549 - Computational Biology - 2010 SBU
Checking For Palindromes in Excel - Episode 2313
A recent news story reported that 02/02/2020 was the first time in 900 years that we had a palindrome as a date. While the news story left out a bunch of additional details, I was wondering if you could easily fact-check that in Excel. In today's episode a way to use Dynamic Arrays, SEQUEN
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CRISPR-Cas9 Genome Editing Technology
We've learned about a few techniques in biotechnology already, but the CRISPR-Cas9 system is one of the most exciting ones. Inspired by bacterial immune response to viruses, this site-specific gene editing technique won the Nobel prize in chemistry in 2020, going to Jennifer Doudna and Emm
From playlist Biology/Genetics
Here are this week's 5 Genuinely Approachable Sudoku (GAS) puzzles: GAS 186 β Kropkidrome by Clover: https://tinyurl.com/2p9y8ut7 Normal sudoku rules apply. The sequence of digits along a grey line forms a palindrome: that is, each grey line reads the same forwards as backwards. Digits o
From playlist All the GAS - Genuinely Approachable Sudokus
Happy Palindrome Day (and other fun days)
Happy Palindrome Day! In this video, I explain why today (02/02/2020) is such a special day, and I also discuss some other interesting dates, like the Fibonacci Day or the See it and Say it Day. Enjoy! Subscribe to my channel: https://www.youtube.com/c/drpeyam Note: The article I was me
From playlist Random fun
Introduction to Sequences (Discrete Math)
This video introduces sequences for a discrete math class. mathispower4u.com
From playlist Sequences (Discrete Math)
Discussing h-vectors and the g-conjecture. Featuring June Huh from the Institute for Advanced Study at Princeton University. More links & stuff in full description below βββ A little extra bit from this interview: https://youtu.be/cFKGX3vAs_Q Shapes in higher dimensions: https://youtu.b
From playlist Fields Medallists on Numberphile
Math tutorial for writing the explicit formula of a sequence
π Learn how to write the explicit formula for the nth term of an arithmetic sequence. A sequence is a list of numbers/values exhibiting a defined pattern. A number/value in a sequence is called a term of the sequence. An arithmetic sequence is a sequence in which each term of the sequence
From playlist Sequences
The Chasm | Think Like A Coder, Ep 6
The adventure continues! Episode 6: Ethic, Hedge, and Octavia must find a way to cross the bottomless ravine to get to the tower. Can they make it before the guards return? -- This is episode 6 of our animated series βThink Like A Coder.β This 10-episode narrative follows a girl, Ethic
From playlist New TED-Ed Originals
For Loop In Python | Python For Loop Tutorial | Python Tutorial | Python Programming | Simplilearn
This Python tutorial will help you understand what is for loop and how to use for loop in Python. In programming, statements are executed sequentially. The first statement in a code is executed first, followed by the second one, and so on. There may be a situation when you need to execute
MegaFavNumbers - 73,496,969,437, palindromic primes, programming squares
Some properties of the number 73,496,969,437. Links and details below: Comment thread from James Grime's video (amicable numbers conjecture): https://www.youtube.com/watch?v=R2eQVqdUQLI Matt Parker's tangent video (biggest tangent of a prime): https://www.youtube.com/watch?v=A7eJb8n8zAw
From playlist MegaFavNumbers
What is the recursive formula and how do we use it
π Learn about sequences. A sequence is a list of numbers/values exhibiting a defined pattern. A number/value in a sequence is called a term of the sequence. There are many types of sequence, among which are: arithmetic and geometric sequence. An arithmetic sequence is a sequence in which
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MegaFavNumbers - Belphegor's Prime
my #MegaFavNumbers Belphegor's Prime! Numberphile's The Most Evil Number: https://www.youtube.com/watch?v=zk_Q9y_LNzg I also just wanted to add that I was planning to film this today, so one of the eye-shadow colors I used is called 'Demonic'. Had to stay in theme, you know?
From playlist MegaFavNumbers