925629
Beschreibung
Mindmap von Georgia Freeman, aktualisiert more than 1 year ago
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Erstellt von Georgia Freeman
vor mehr als 10 Jahre
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Genetic Variation and its Control - B1
- There are differences of course between different
species of plants and animals, there are also
differences between individuals of the same species.
- the differences are due partly to the info in
cells that they've inherited from their parents.
- also, partly from the different environments
in which the individuals live and grow
- also, partly from the different environments
in which the individuals live and grow
- the differences are due partly to the info in
cells that they've inherited from their parents.
- GENETIC CONTROL
- Asexual reproduction can be used
to produce individuals that are
genetically identical to their parent.
- Scientists can now add, remove or change genes to
produce the plants and animals they want.
- Asexual reproduction can be used
to produce individuals that are
genetically identical to their parent.
- Why organisms are different
- similar characteristics =
found in genes
- genes are passed on in the
sex cells(gametes) from
which offspring develop
- genes are passed on in the
sex cells(gametes) from
which offspring develop
- the nucleus of the cell contains
the CHROMOSOMES
- CHROMOSOMES carry the genes
- different genes control
the development
- of different characteristics
of an organism
- of different characteristics
of an organism
- different genes control
the development
- CHROMOSOMES carry the genes
- variation can be caused by
the conditions in which the
organism has developed
- (ENVIRONMENTAL FACTORS)
- (ENVIRONMENTAL FACTORS)
- similar characteristics =
found in genes
- REPRODUCTION
- SEXUAL REPRODUCTION
- is the joining (fusing) of male
and female gametes
- the mixing of the the genetic info
of the two parents leads to
genetic variation in the offspring
- the mixing of the the genetic info
of the two parents leads to
genetic variation in the offspring
- is the joining (fusing) of male
and female gametes
- ASEXUAL REPRODUCTION
- involves only one parent and
the offspring are genetically
identical (clones)
- CLONING TECHNIQUES
- plants can be grown from
cuttings of a parent plant
- TISSUE CULTURE
- - using small groups of cells from the parent
plant to produce large numbers of plant
- - using small groups of cells from the parent
plant to produce large numbers of plant
- EMBRYO TRANSPLANTS
- - splitting apart cells in an
embryo and implanting them
into host mothers
- - splitting apart cells in an
embryo and implanting them
into host mothers
- ADULT CLONING
- - removing a nucleus from an egg
cell and inserting one from a body
cell: after treatment, the embryo is
implanted into a womb
- Adult animals that have
outstanding features can
be cloned for meat or milk
production.
- 1. The nucleus is removed from an unfertilised egg cell
- 2. a nucleus from a body cell is inserted into the egg cell
- 3. the cell is triggered to divide via electric shocks
- 4. this embryo has identical genetic info to the body cell
- 5. this embryo is inserted into the host womb
- its development continues to produce a clone of the parent
- its development continues to produce a clone of the parent
- 5. this embryo is inserted into the host womb
- 4. this embryo has identical genetic info to the body cell
- 3. the cell is triggered to divide via electric shocks
- 2. a nucleus from a body cell is inserted into the egg cell
- 1. The nucleus is removed from an unfertilised egg cell
- - removing a nucleus from an egg
cell and inserting one from a body
cell: after treatment, the embryo is
implanted into a womb
- plants can be grown from
cuttings of a parent plant
- CLONING TECHNIQUES
- involves only one parent and
the offspring are genetically
identical (clones)
- SEXUAL REPRODUCTION
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