7727895
Description
Mind Map by 007842-Stuart Denton, updated more than 1 year ago
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Created by 007842-Stuart Denton
almost 8 years ago
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Patterns of Inheritance
- Factors affecting phenotype
- Enviromental
- Scars
- Accents
- Scars
- Genetic
- Persistent
- Transmitter through
multiple generations
without change
- Transmitter through
multiple generations
without change
- Random
- Mutates on a gene the the
organism doesn't use
- Mutates on a gene the the
organism doesn't use
- Persistent
- Sexual Reproduction
- Variation occurs in Meiosis
- Metaphase one
- Chromatids cross over
- Chromatids cross over
- Anaphase 1&2
- Metaphase one
- Variation occurs in Meiosis
- Enviromental
- Chromosome Mutations
- Deletion
- lost
- lost
- Inversion
- Turned around
- Turned around
- Translocation
- Breaks off, reconnects to
another chromosome
- Breaks off, reconnects to
another chromosome
- Duplication
- Non-disjunction
- One pair fails to separate,
extra chromosome
- One pair fails to separate,
extra chromosome
- Aneuploidy
- Chromosome number is
not exact multiple for that
organism
- Chromosome number is
not exact multiple for that
organism
- Polyploidy
- Diploid fertilised by haploid = Triploid
- Fusion of two diploid = Tetraploid zygote
- Diploid fertilised by haploid = Triploid
- Deletion
- Factors affecting Genotype
- Biological
- Chemical
- Physical agents
- Biological
- Dihybrid Cross
- Mendel
- Two genes are inherited
independently
- During fertilisation any allele
can bind with any other allele
- Simultaneous inheritance of two
characteristics
- Mendel
- Co-dominance & Linkage
- Multiple alleles- more than two variations of the gene
- Can still only process two alleles, one for
each gene locus
- Can still only process two alleles, one for
each gene locus
- Human blood groups, three allele
for one gene
- If you have 2 codominant alleles, the phenotype
of a homozygous organism will be different from a
heterozygous because both alleles contribute
- Sex-
linkage
- Colourblindness and
Haemophillia
- Males mostly affect because lack of second X chromosome
- Colourblindness and
Haemophillia
- Multiple alleles- more than two variations of the gene
- Epistasis
- Antagonistically
- Complementary
- Is the interaction of non-linked gene loci
- Ignores the dom and recess nature
- Ignores the dom and recess nature
- Antagonistically
- Stats
- Chi-Squared
- Hardy-Weinberg
- Chi-Squared
- Factors affecting genetic variation
- Population size
- Isolation
- Mutation rate
- Genetic drift
- Continious or discontinious variation
- Population size
- Three types of selection:
- Stabalising
- Environment remains the same,
leads to reduction in genetic variety
- Environment remains the same,
leads to reduction in genetic variety
- Directional
- Environment changes, leads to
shift in optimum value
- Used by selective breeders
- Can alternate with periods of stablising
- Environment changes, leads to
shift in optimum value
- Dsiruptive
- Favours both extreme and intermediate traits
- Favours both extreme and intermediate traits
- Stabalising
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