Презентация на тему Artificial selection

Содержание

2. Artificial selection
3. Learning ObjectiveExplore ways to improve crop plants and animals using the methods of breeding.
4. Success criteria1. Analyse ways of improving agricultural
5. Terminology Hybridization Inbreeding OffspringSelective breedingCommon ancestorsmethods of breedingInbreeding depressionDomestication
6. Artificial selection Artificial Selection is a form
7. Steps of Artificial Selection1. Humans decide
8. Two different types of selective breeding processesHybridization and inbreeding
9. Hybridization vs Inbreeding
10. Hybridization is the process of crossing genetically
12. Interbreeding depression It refers to decrease in
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18. double doodleLabradorpoodlegolden retriever
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Artificial selection

Learning ObjectiveExplore ways to improve crop plants and animals using the methods of breeding.

Success criteria1. Analyse ways of improving agricultural plants and animals with the

Terminology Hybridization Inbreeding OffspringSelective breedingCommon ancestorsmethods of breedingInbreeding depressionDomestication

Artificial selection Artificial Selection is a form of selection in which humans

Steps of Artificial Selection1. Humans decide trait or characteristic of interest.2.

Two different types of selective breeding processesHybridization and inbreeding

Hybridization is the process of crossing genetically different individuals to produce offspring

Interbreeding depression It refers to decrease in fitness and vigour due to

double doodleLabradorpoodlegolden retriever

Слайды презентации

Слайд 2 Artificial selection

Слайд 3 Learning Objective
Explore ways to improve crop plants and

animals using the methods of breeding.

Слайд 4 Success criteria
1. Analyse ways of improving agricultural plants

Success criteria1. Analyse ways of improving agricultural plants and animals with

and animals with the help of selection methods.
2.

Find a method that could be used to improve their plants and animals and identify why certain features have been selected.

Слайд 5 Terminology
Hybridization
Inbreeding
Offspring
Selective breeding
Common ancestors
methods of breeding
Inbreeding

depression
Domestication

Слайд 6 Artificial selection
Artificial Selection is a form of

Artificial selection Artificial Selection is a form of selection in which

selection in which humans actively choose which traits should

be passed onto offspring.
selection caused by humans.
a deliberate and planned process.
leads to deliberate genetic change.
genetic constitution of the population changes rapidly.
on-going process to obtain higher yields, superior nutrient conrent and resistance to disease.

Слайд 7 Steps of Artificial Selection
1. Humans decide trait

or characteristic of interest.
2. Breed the choices together
3.

Choose offspring with ideal characteristics to mate
Repeat for many generations
The allelic frequency for the characteristic increases.
6. Decide what type of selection is occurring in the population
Selective, Directional, Disruptive

Слайд 8 Two different types of selective breeding processes
Hybridization and

inbreeding

Слайд 9 Hybridization vs Inbreeding

Слайд 10 Hybridization
is the process of crossing genetically different

Hybridization is the process of crossing genetically different individuals to produce

individuals to produce offspring
increases

the heterozygous alleles
two different species are involved
Alleles of offspring are much different that their parents
Less probability of genetic mutations

Inbreeding
is the crossing of two closely related parents, or close relatives, who share very similar alleles.
increases the amount of homozygous alleles.
One species involved
Alleles of offspring are very similar to parents
High probability of genetic mutations