MYTUTOR SUBJECT ANSWERS

485 views

Please explain Mitosis

Background knowledge

DNA - carry the genetic code that determines characteristics of an organism

Chromosomes - made from long DNA molecules, many genes all coiled up into a chromosome. A healthy person will have 23 pairs of chromosomes.

Genes - a section of DNA that codes for a protien

Mitosis is all about replication of DNA

Cells reproduce in two ways - Mitosis and Meiosis.

remeber the difference

Mitosis - Cellular reproduction (making new cells), growth (gowing tissue), repair (replace damaged tissue), and asexual reproduction.

Meiosis - To create genetic diversity for sexual reproduction. 

Stages

1. In the parent (original) cell, chromosomes make identical copies of themselves so there are 46 chromosomes. 

2. They line up along the centre, and then the pairs break apart and move to opposit ends of the cell

3. A split is made in the middle of the cell. Two daughter cells form with identical chromosomes to the parent cell. Each cell will have 26 chromosomes which will later replicate back to 46.

These two daughter cells are genetically identical to the original cell. They may simply create new tissue, or could be the start of a new organism.

See image for a diagram for the steps. http://www.bbc.co.uk/staticarchive/6e72c0727b01ab432efaadf3e4a262e1a7a1acfa.gif 

Jacob C. A Level Biology tutor, GCSE Biology tutor, GCSE Geography tu...

1 year ago

Answered by Jacob, who tutored GCSE Biology with MyTutor


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

267 SUBJECT SPECIALISTS

£36 /hr

Steven A.

Degree: Bioscience (Masters) - Durham University

Subjects offered:Biology, Science+ 5 more

Biology
Science
Maths
Human Biology
English
Chemistry
-Personal Statements-

“Hey! I'm Steven, 18 years old and I'm studying Biochemistry at Durham University. I love tutoring people, to put it simply. At my college i was a tutor to a student in the year below me for chemistry and growing up with a younger sist...”

£18 /hr

Katie D.

Degree: Biomedical Science (Bachelors) - Durham University

Subjects offered:Biology

Biology

“Hello, I am just a genuine, patient, friendly person who wants to help other struggling students to understand, enjoy and hopefully succeed in biology.”

John D. GCSE English tutor, A Level English tutor, GCSE Biology tutor...
£30 /hr

John D.

Degree: English language and literature (Bachelors) - Oxford, University College University

Subjects offered:Biology, English Literature+ 3 more

Biology
English Literature
English Language
Chemistry

“Hello hello About me: I am a third year English Literature and Language Student at University College, Oxford. Amongst the things I feel most strongly about our drama, literature and teaching. I am a student ambassador at my college ...”

About the author

Jacob C.

Currently unavailable: for regular students

Degree: Psychology (Bachelors) - Bristol University

Subjects offered:Biology, Religious Studies+ 1 more

Biology
Religious Studies
Geography

“I'm a first year Psychology student at Bristol University. I have spent lots of time, and really enjoy working with children. I have previously worked full time at preparatory school, where I would regularly give extra tuition to chil...”

MyTutor guarantee

You may also like...

Other GCSE Biology questions

Explain how natural selection can lead to new species forming (speciation)

How does the body protect itself from pathogens?

How does a vaccine prevent infection?

What is the product of anaerobic respiration?

View GCSE Biology tutors

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

mtw:mercury1:status:ok