Variation, reproduction and new technology
- Created by: believeinbelleve
- Created on: 19-09-16 15:34
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- Variation, reproduction and new technology
- Inheritance
- Why do we resemble our parents?
- E.g.s of inherited characteristics
- Nose shape
- Eye colour
- Dimples
- Result of info from genes
- Passed on to you from the gametes from which you developed
- E.g.s of inherited characteristics
- Chromosones and genes
- Inside the nucleus of all your cells are chromosones
- Thread like structures
- Chromosones made of chemical called DNA
- This is where the genetic info is stored
- Every organism has a different amount of chromosones
- Humans have 46 total
- 1/2 inherited from Mum 1/2 from dad
- 23 pairs in all normal body cells
- Humans have 46 total
- Chromosones contain genes. Genes are the unit of inheritance
- In an organism genes control
- Size
- Shape
- Colour
- DNA is a long two stranded molecule, twisted together to make a spiral
- Known as a double helix
- In an organism genes control
- Inside the nucleus of all your cells are chromosones
- Why do we resemble our parents?
- Types of reproduction
- Sexual
- Joining of 2 gametes
- Inherit genetic info from both parents
- Introduces variety
- Plants do it
- most animals do it
- Gametes made
- Asexual
- 1 parent
- Offspring are clones (no genetic variation)
- Common in bacteria
- No cell fusion
- Used to replace worn out tissues in your body
- Sexual
- Genetic Variation and Control
- Differences in species may be down to genetic/environmental differnces or both
- Environment
- Wind swept tree
- Flowers (of same species) colour
- Height
- Genetics
- Eye colour
- Ear lobes-Attached/detatched?
- Genetics
- Genetics
- Eye colour
- Ear lobes-Attached/detatched?
- Environment
- Differences in species may be down to genetic/environmental differnces or both
- Cloning
- Fusion Cell
- Cell removed from mammary gland of the DNA donor sheep
- Egg removed from egg donor sheep and de-nucleated
- De-nucleated egg and donated DNA fused together with electric shock
- Fused cell given another electric shock, begins to divide and form an embryo
- Embryo implanted into uterus of surrogate sheep
- Surrogate gives birth to lamb (a clone of the DNA donor sheep)
- Embryo implanted into uterus of surrogate sheep
- Fused cell given another electric shock, begins to divide and form an embryo
- De-nucleated egg and donated DNA fused together with electric shock
- Egg removed from egg donor sheep and de-nucleated
- Cell removed from mammary gland of the DNA donor sheep
- Fusion Cell
- Inheritance
- Cell removed from mammary gland of the DNA donor sheep
- Egg removed from egg donor sheep and de-nucleated
- De-nucleated egg and donated DNA fused together with electric shock
- Fused cell given another electric shock, begins to divide and form an embryo
- Embryo implanted into uterus of surrogate sheep
- Surrogate gives birth to lamb (a clone of the DNA donor sheep)
- Embryo implanted into uterus of surrogate sheep
- Fused cell given another electric shock, begins to divide and form an embryo
- De-nucleated egg and donated DNA fused together with electric shock
- Egg removed from egg donor sheep and de-nucleated
- Tissue culture
- Right mixture of plant hormones
- Can make a small group of cells from chosen plant produce a big mass of identical plant cells
- then with a different hormone mix and conditions you can stimulate these cells to form a new plant
- Guarantees desired characteristics
- Modern alternative to cuttings (which also produce identical daughter plants)
- Guarantees desired characteristics
- then with a different hormone mix and conditions you can stimulate these cells to form a new plant
- Can make a small group of cells from chosen plant produce a big mass of identical plant cells
- Cloning
- Fusion Cell
- Fusion Cell
- Right mixture of plant hormones
- Genetic engineering
- Used to change an organism and give it new characteristics
- Enzymes used to cut the donor and recipient DNA molecules
- Section of DNA inserted into recipient DNA
- Recepient organism now able to produce required protein
- Section of DNA inserted into recipient DNA
- Enzymes used to cut the donor and recipient DNA molecules
- Variation, reproduction and new technology
- Inheritance
- Why do we resemble our parents?
- E.g.s of inherited characteristics
- Nose shape
- Eye colour
- Dimples
- Result of info from genes
- Passed on to you from the gametes from which you developed
- E.g.s of inherited characteristics
- Chromosones and genes
- Inside the nucleus of all your cells are chromosones
- Thread like structures
- Chromosones made of chemical called DNA
- This is where the genetic info is stored
- Every organism has a different amount of chromosones
- Humans have 46 total
- 1/2 inherited from Mum 1/2 from dad
- 23 pairs in all normal body cells
- Humans have 46 total
- Chromosones contain genes. Genes are the unit of inheritance
- In an organism genes control
- Size
- Shape
- Colour
- DNA is a long two stranded molecule, twisted together to make a spiral
- Known as a double helix
- In an organism genes control
- Inside the nucleus of all your cells are chromosones
- Why do we resemble our parents?
- Types of reproduction
- Sexual
- Joining of 2 gametes
- Inherit genetic info from both parents
- Introduces variety
- Plants do it
- most animals do it
- Gametes made
- Asexual
- 1 parent
- Offspring are clones (no genetic variation)
- Common in bacteria
- No cell fusion
- Used to replace worn out tissues in your body
- Sexual
- Genetic Variation and Control
- Differences in species may be down to genetic/environmental differnces or both
- Environment
- Wind swept tree
- Flowers (of same species) colour
- Height
- Environment
- Differences in species may be down to genetic/environmental differnces or both
- Inheritance
- Used to change an organism and give it new characteristics
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