null
US
Sign In
Sign Up for Free
Sign Up
We have detected that Javascript is not enabled in your browser. The dynamic nature of our site means that Javascript must be enabled to function properly. Please read our
terms and conditions
for more information.
Next up
Copy and Edit
You need to log in to complete this action!
Register for Free
56482
Biological Factors Affecting Growth and Development.
Description
Health and Social Mind Map on Biological Factors Affecting Growth and Development., created by liannex on 25/04/2013.
No tags specified
health and social
health and social
Mind Map by
liannex
, updated more than 1 year ago
More
Less
Created by
liannex
over 11 years ago
42
1
0
Resource summary
Biological Factors Affecting Growth and Development.
Genetic Inheritance.
23 pairs of chromosomes.
Made of DNA which carries inheritence known as genes.
DNA = Deoxyribonucleic acid
Fathers donation of the Y chromosome in the 23rd pair which determines the sex of the child.
Chromosome Abnormalities.
1 in 200 babies born alive has chromosome abnormalities.
Down's Syndrome - Trisomy 21.
1 in 650 babies are born with Trisomy 21.
Trisomy 21 = Presence of 3 chromosomes at pair 21
More present in women in their late 30's and 40's
Offered invaisive tests of sampling foetal cells from the amniocentesis or chronic villus sampling.
Small facial features with eyes that slope upwards at the outer corners.
Skin folds covering the nasal corners.
Tongue is large and protruding.
Hands are short and broad with unusual palm creases.
Back of head is flat.
Less than a generation ago, many Down's Syndrome children did not live past adolescence.
Unifactorial Disorders.
Cause considerable disability.
Divided into Autosomal Disorders and Sex-linked Disorders.
Autosomal Disorders.
23 pairs of chromosomes.
Composed of 2 units called alleles, each of which is on a single chromosome.
Each allele originate from parent.
2 alternative forms.
The gene could be composed of 2 alleles, BB bb or Bb.
Sex-linked Disorders.
Show full summary
Hide full summary
Want to create your own
Mind Maps
for
free
with GoConqr?
Learn more
.
Similar
Health and Social Care PIES
s1501118
health and social care
08elstub_ru
K101 Case Studies
Rae Leigh Cawley
Health and Social Flashcards
Holly Bamford
Types of communication
bambermolly
Non-verbal
bambermolly
Safegaurding
Leanne.Stevens
Leukaemia key terms
s1500542
health & social -
jasminefriel1
Department of health
sophieridings
The Mental Health Act 1983
tamsinbellamy
Browse Library