MYTUTOR SUBJECT ANSWERS

240 views

What are alleles and what are their function?

Alleles are different forms of the same gene which are located on the same part of the chromosome. 

Genes are made up of information needed to produce different proteins, so alleles carry information to produce different versions of the same protein. 

We have 22 pairs of 'autosomal' or non-sex chromosomes and 1 pair of sex chromosomes (x and y). In each pair one copy comes from the mother and one from the father.

A particular allele will be in the equivalent place on each copy in the pair. So like the chromosome, we have one allele from the mother and one from the father for each gene.

The alleles may be the same (e.g. for the gene responsible for eye colour, both may be for brown eyes) - these alleles are called homozygous.

They may also be different (one allele e.g. from the mother may be for blue eyes and the other from the father for brown eyes) - these alleles are called heterozygous

Aneesh S. 13 plus  Maths tutor, GCSE Maths tutor, 11 Plus Maths tutor...

6 months ago

Answered by Aneesh, a GCSE Biology tutor with MyTutor


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

242 SUBJECT SPECIALISTS

£18 /hr

Norviewu D.

Degree: BSc Applied Psychology (Clinical) (Masters) - Exeter University

Subjects offered: Biology, French+ 2 more

Biology
French
English Literature
English Language

“About Me I am a second-year psychology student at the University of Exeter. I am passionate about science and the arts and believe that it really comes across through my teachings and explanations with people. I have worked as a tutor...”

MyTutor guarantee

£18 /hr

Alana F.

Degree: Law (Bachelors) - Durham University

Subjects offered: Biology, Geography+ 3 more

Biology
Geography
Extended Project Qualification
English
.LNAT.

“About me I am currently studying law at Durham University. I have always enjoyed reading and so a degree with this at its centre is perfect for me! In the past two years I have tutored a number of Biology and English students tackling...”

£18 /hr

Anna H.

Degree: Anthropology (Bachelors) - Durham University

Subjects offered: Biology, Drama

Biology
Drama

“About me: Hi I’m Anna and I’m in first year, studying Anthropology at Durham University. My course has a fair bit of biology in it (genetics, evolution, health, disease etc.), and I also did Biology at A level, along with Geography an...”

MyTutor guarantee

About the author

Aneesh S.

Currently unavailable: for new students

Degree: Medicine MBBS BSc (Bachelors) - University College London University

Subjects offered: Biology, Maths+ 1 more

Biology
Maths
Chemistry

“Let me introduce myself: I'm Aneesh, a second year medical student who has just completed his second year at University College London. Through my own experience of benefitting from many outstanding teachers, I know firsthand the dif...”

MyTutor guarantee

You may also like...

Posts by Aneesh

A cylindrical beaker has a height of 16 cm and a diameter at its bottom of 10 cm. What is its volume? Give your answer to 2 decimal places.

Arrange the following decimals in order of size: 0.45, 1.09, 0.3, 0.08

Outline the process of protein synthesis in a cell.

The following sequence reads: 8, 5, 2, -1. What are the 4th and 50th terms of this sequence?

Other GCSE Biology questions

Describe how a reflex occurs?

What is the difference between passive and active immunity?

How would you go about comparing hormonal and nervous responses in mammals?

Why is the heart known as a double pump?

View GCSE 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