MYTUTOR SUBJECT ANSWERS

600 views

What is sex linkage?

 

Sex linkage is a type of genetic disease, where the gene with the faulty allele is carried on the X chromosome. 

Women have 2X chromosomes whilst men only have 1. Consequently if the diseased allele is recessive, males always express it in their phenotype if it is present in their genotype (XhY) whereas women require 2 recessive alleles to show expression (homozygous XhXh). Therefore women can only be effected if both her mother and father contain the allele. Women can be carriers (XhXH). 

A key example is haemophillia. 

Katie D. Mentoring -Personal Statements- tutor, A Level Biology tutor...

1 year ago

Answered by Katie, an A Level Biology tutor with MyTutor


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

153 SUBJECT SPECIALISTS

£20 /hr

Karishma D.

Degree: Medicine (Bachelors) - Imperial College London University

Subjects offered: Biology, Maths+ 3 more

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

“Hi guys, I'm a first year medical student at Imperial College London. I chose this degree because it indulges my passion for science whilst allowing me to interact with people, putting what I learn in the lecture theatre into practise...”

£20 /hr

Upasana T.

Degree: Medicine (Bachelors) - Birmingham University

Subjects offered: Biology, Maths+ 1 more

Biology
Maths
Latin

“About me: Hi, my name is Upasana Topiwala and I am currently in my third year of medical school at the university of Birmingham. I've taken up tutoring in order to inspire my students to appreciate the importance of science in our liv...”

£20 /hr

Hilary L.

Degree: Veterinary Medicine & Surgery (Bachelors) - Glasgow University

Subjects offered: Biology, Chemistry+ 1 more

Biology
Chemistry
-Personal Statements-

“Hello! I'm Hilary, a 1st year veterinary student at the University of Glasgow. I am a recent May 2016 IB diploma graduate, attaining a total of 40 points with a 7 in HL biology. This means that I am familiar with the recent change of t...”

MyTutor guarantee

About the author

Katie D.

Currently unavailable:

Degree: Biochemistry (Bachelors) - Durham University

Subjects offered: Biology, Physics+ 2 more

Biology
Physics
Chemistry
-Personal Statements-

“About me Hello! I am a Biochemistry student at Durham University and I LOVE ALL THINGS SCIENCE and I hope my tutorials will make you do too (or maybe just hate it less).  I am super friendly and I take pride in making even the most d...”

You may also like...

Posts by Katie

How do I test for the presence of a carboxylic acid?

What are the 'rules' of oscillation?

What is a chiral carbon?

What is sex linkage?

Other A Level Biology questions

Explain how skeletal muscle contraction is stimulated

What are the differences between mitosis and meiosis?

Describe what happens at a chemical synapse

What are the roles of the sinoatrial node (SAN) and the atrio-ventricular node (AVN)?

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