MYTUTOR SUBJECT ANSWERS

182 views

What is a genetic mutation?

A mutation is a random change in the amount of DNA or sequence of DNA nucleotides within a cell. DNA is a double helix with two polynucleotide strands joined by hydrogen bonds between complementary base pairs. This structure is usually very stable, but mutations can randomly occur during DNA replication and also in the presence of mutagens (e.g. ionising radiation). Genetic mutations involve insertions, deletions, substitutions, inversions, changes in the number of repeat units, deamination (e.g. cytosine can be deaminated to form uracil) or depurination (resulting in the conversion of a nucleotide into a sugar-phosphate residue). 

Krupa R. GCSE Biology tutor, A Level Biology tutor, GCSE Chemistry tu...

5 months ago

Answered by Krupa, an A Level Biology tutor with MyTutor

Still stuck? Get one-to-one help from a personally interviewed subject specialist

126 SUBJECT SPECIALISTS

£22 /hr

Elizabeth L.

Degree: Veterinary Science (Bachelors) - Bristol University

Subjects offered: Biology, Science+ 5 more

Biology
Science
Maths
German
Chemistry
.BMAT (BioMedical Admissions)
-Personal Statements-

“All About Me:  I am currently studying Veterinary Science at the University of Bristol. My love of science and the desire to work with people and animals means that I thoroughly enjoy my course. I have had part time jobs working with...”

£26 /hr

Tabitha E.

Degree: Medicine (Bachelors) - Durham University

Subjects offered: Biology, Psychology+ 4 more

Biology
Psychology
History
Chemistry
-Personal Statements-
-Medical School Preparation-

“Hi, I'm Tabby, a medical student at the University of Durham. I would really love to help with anything and everything I can!”

£20 /hr

Ruth W.

Degree: Biochemistry (Masters) - Birmingham University

Subjects offered: Biology, Science+ 3 more

Biology
Science
Physics
Maths
Chemistry

“About Me: I am a biochemistry student at the University of Birmingham.  I have always had a real passion and love for all things science and maths and I hope that my tutorials will instil this love in you too. I’m very patient and fr...”

MyTutor guarantee

About the author

Krupa R.

Currently unavailable: until 10/05/2017

Degree: Medicine (Bachelors) - Oxford, Lincoln College University

Subjects offered: Biology, Maths+ 3 more

Biology
Maths
Chemistry
-Personal Statements-
-Medical School Preparation-

“Hi, I'm Krupa - a medical student at Lincoln College, Oxford. I want to be a tutor because I really enjoy teaching and I'm passionate about studying Science  and am keen to share this interest with others.  However, I understand that s...”

MyTutor guarantee

You may also like...

Posts by Krupa

How much scientific interest should I demonstrate in a Medicine personal statement?

What are the different types of isomers?

What is a genetic mutation?

Other A Level Biology questions

How does the structure of DNA make it an effective carrier of genetic information?

What is the difference between DNA and RNA?

What is the role of mitochondria in animal cells?

Describe and explain the mechanism that causes forced expiration. (4 marks)

View A Level Biology tutors

Cookies:

We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok