Patterns of Inheritance
Terms
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copy deck
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Recessive gene - effect is masked out by the allele
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Punnett square - use to work out genetics problems
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Dominant gene - masks the effect of the contrasting gene
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Mendel's conclusion - Double dose of factors(alleles).
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P1 -
parental generation, the starting plants
Tall X Short
TT X tt -
Diabetes - caused by a recessive allele
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alleles - contrasting forms of the same gene
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Heterozygous - one of each allele (e.g. Tt)
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Homozygous - Two alleles that are the same (e.g. tt, TT)
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F1 -
second generation, filial generation
Tall X Tall
Tt X Tt -
carrier - when one has the recessive allele of a dominant trait.
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F2 -
second Filial generation
3/4 tall
1/4 short
ratio of 3:1 -
Gregor Mendel -
a monk
determined inheritence pattern
father of modern genetics
pea plants -
Probability -
The chance of something happening. P=m/n
P=probability, m=desirable outcome, n=total possible outcome
always between 0 and 1. -
Genes -
-on our chromosomes
-control traits
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The smaller the sample size... -
The bigger the variation -
Genotype - the genes that create your appearance
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Mendel's success due to: -
-luck
-look at limited # of traits
-was good at statistics
-large sample size
-kept careful records
-used self-pollination, cross-pollination -
Cross-pollination - Take plant A and removet he stamen leaving only the pistal. Take the stamen of plant B and put it to the pistal of A.
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Phenotype - the appearance