En

vir

op

igM

ost p

igs

have

po

ison

ous

poo.

It

can

was

h in

to r

iver

s an

d ha

rm fi

sh. U

sing

D

NA

from

pig

s,

bact

eria

and

mic

e,

scie

ntis

ts h

ave

mad

e pi

gs w

ith n

on-

toxi

c po

o. T

his

is a

n ex

ampl

e of

gen

etic

m

od

ifica

tio

n.

Kil

lEr

ca

bb

ag

Es

Add

ing

scor

pion

ven

om

to c

abba

ge le

aves

cou

ld

stop

inse

cts

from

eat

ing

them

, so

farm

ers

can

use

less

pes

ticid

es.

This

is a

n ex

ampl

e of

g

enet

ic m

od

ifica

tio

n.

ba

na

na

sIn

the

wild

, ban

anas

are

sm

all

and

oval

with

big

see

ds. O

ver

time,

peo

ple

sele

cted

see

ds

from

the

thin

ner,

less

see

dy,

swee

ter

bana

nas

to b

reed

ba

nana

s fo

r us

to e

at. T

his

is a

n ex

ampl

e of

sel

ecti

ve b

reed

ing

.

Fis

h o

il s

EE

ds

Om

ega-

3 oi

ls fo

und

in a

lgae

are

go

od fo

r yo

u. B

ut w

e do

n’t e

at

alga

e, s

o sc

ient

ists

hav

e w

orke

d ou

t a w

ay to

add

thes

e oi

l ge

nes

to s

eeds

that

we

do e

at.

This

is a

n ex

ampl

e of

gen

etic

m

od

ifica

tio

n.

bE

lgia

n b

lUE

Farm

ers

bree

d co

ws

with

big

mus

cles

an

d no

t muc

h fa

t to

mak

e co

ws

with

lots

of m

eat.

This

is a

n ex

ampl

e of

sel

ecti

ve

bre

edin

g.