11b1 selective breeding
TRANSCRIPT
8/8/2019 11B1 Selective Breeding
http://slidepdf.com/reader/full/11b1-selective-breeding 1/8
Selective BreedingAIM: be able to explain how selective breeding is carried out
to produce new varieties of plant.
TASK: How many differentgroups can you make from the
following plants and animals.
How many ways can you make
the groups overlap?
Working animals
Plants and
animals used for
food
Sheep can be both!
corn, wheat, rose, sheep,duck, goose, tomato,cabbage, rye, racehorse,cart horse, pit pony,alsatian, labrador,sheepdog, St Bernarddog, apple, seedlessgrape, hemp, fast-growing
conifer tree, strawberry,farmed trout, farmedsalmon, wild trout, wildsalmon
8/8/2019 11B1 Selective Breeding
http://slidepdf.com/reader/full/11b1-selective-breeding 2/8
Why are there so many different varieties of
apples?
8/8/2019 11B1 Selective Breeding
http://slidepdf.com/reader/full/11b1-selective-breeding 3/8
Romaine
Iceberg
Oak leaf
Common round
lettuce
Why are
there somany
different
varieties of
lettuce?
8/8/2019 11B1 Selective Breeding
http://slidepdf.com/reader/full/11b1-selective-breeding 4/8
Selective BreedingWhat do these three have in common with this
one?
belgian blue to 3:17
8/8/2019 11B1 Selective Breeding
http://slidepdf.com/reader/full/11b1-selective-breeding 5/8
S_______ b _______ is a process used to producedifferent breeds of animals or varieties of plants thathave useful c ____________ .
Farmers can c_____ individual
cows to mate to produce cowsthat will yield more m____.
Apple growers can cross a variety of apple
known for taste with another variety thatshows strong resistance to d_____.
What is selective breeding?
8/8/2019 11B1 Selective Breeding
http://slidepdf.com/reader/full/11b1-selective-breeding 6/8
Tasks
1. For each of the following organisms list the features that
might be selectively bred for:
Cattle
Sheep
Horses
Apple trees
2. Read pages 50 and 51, answer the questions in full
sentences.
3. Imagine that you want to breed the perfect animal or plant.
What would it be? Produce a billboard advert for your new
breed.
8/8/2019 11B1 Selective Breeding
http://slidepdf.com/reader/full/11b1-selective-breeding 7/8
T rue or false?
8/8/2019 11B1 Selective Breeding
http://slidepdf.com/reader/full/11b1-selective-breeding 8/8
Pollination in plants
Write a set of instructions which could be given to a plant
breeder to explain how
to sele
ctiv
elybreed
thei
r pla
n
ts.Explain how: pollen from one flower can be used to pollinate anotherflower;to ensure that there is no contamination with pollen from
other flowers.