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Gregor Mendel - father of genetics!

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Gregor Mendel - father of genetics! Austrian Monk tended to the garden in the monastery now it is located in CZ Performed Experiments Using garden peas because they . – PowerPoint PPT presentation

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Title: Gregor Mendel - father of genetics!


1
Gregor Mendel- father of genetics!
  • Austrian Monk
  • tended to the garden in the monastery
  • now it is located in CZ

2
Performed Experiments Using garden peas because
they.
  • grow quickly
  • are hardy plants
  • self-pollinate
  • ? pure for each trait

3
Parental Generation or P1 generation
All the offspring were tall ????? Called first
filial or F1 generation
4
He then crossed two offspring from the F1
generation
3 tall offspring to each 1 short offspring
31 called F2 generation second filial generation
Tall F1
X
Tall F1
5
Explanation of his Results
Dominant trait T or tall Recessive trait t
or short
trait is size that is the characteristic
allele is variation of the trait ex. Tall or
short
6
Pivotal Concept that Mendel hypothesized..
  • Genes are always in pairs

one half of the pair comes from the father
the other half of the pair comes from the mother
7
P1 generation TT x tt explained using punnett
squares
  • Genotype -
  • gene combination of the children
  • look at ancestors
  • Phenotype
  • what is looks like
  • use your eyes to detect

8
He then crosses 2 F1 ? Tt x Tt
Genotypes - TT, tt, Tt
Phenotypes - 3 tall 1 short
F2 Monohybrid Phenotypic Ratio
9
Terms to Know !!!!
  • Trait - characteristic
  • allele - variation of a trait
  • homozygous - 2 genes in the gene pair are the
    same
  • heterozygous - 2 genes in the pair are different
  • Purebred - homozygous
  • hybrid - heterozygus
  • genotype - gene combination
  • phenotype - what it looks like
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