Genetic variation

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First 465 words of the document:

s
G e ne
Conditions
es
nc Co
re mbinat
ion
e
ff
Di
Gametes
n es
o n ge
ss
pa
s
nt
re
Pa
mosomes
airs of chro
23 p
Tissue cu
s
c e ll
l tu r
e X X f e m a le
an 23
m
Hu
Embryo transplants C lo n i n XY male
g
teristics
g h ar a c
in re nt c
lon
Adult cell c iffe
D
Is o l a t i Ge n e ti c
on ma e c ha r
acteristics are co
ntrolled by one gene
Inserted into ni p Som
a ve
c to u la g e nes
r g ti o re n t
rin n ffe Eac
inee Di h ge
ne may
Genetic eng have different forms Alleles
Vector then inserted into required cells
air
P
Resistant to insects Genetic variation of
chr S am
e allele - homozy
g ous
or her
bicid In h e r Variation & omoso
mes
es it e
s d inheritance Diffe
rent allel
op es - heterozygous
GM c r
Increased yields s
Polydact er e-b
oth all
eles to show
yly
ord s s iv
dis
Natural populations
ns ce
Conce r Re
tic
Human health
Cystic fibrosis Gene
ll e
A
nly need one allele to show
les Dominant - o
e
rom
Ri sk o f m i s c Downs synd Ge
noty
pe - wha
a rr i a t is in the genes
ge Ph
en
oty
ng
n i pe
- wh
Reliability Scre e at sho
ws in the body
g 2 g a m e te s
atin
Re
ut termin ro ual - m eiosis
Sex
p
Decisions abo du
ctio Variety
n
Ase One cell
xual - mitos
is
Identical
offspring
helix
Twisted double
Or
D NA Coded in
ga
nis formation
ati
on
Chromosome
ion of chromosome
S ect
Ge
ne
Cod
es for c
ombination of amino acids

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