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2581354
Inheritance, Gregor Mendel
Description
Mind Map on Inheritance, Gregor Mendel, created by pcowans58 on 24/04/2015.
Mind Map by
pcowans58
, updated more than 1 year ago
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Created by
pcowans58
about 9 years ago
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Resource summary
Inheritance, Gregor Mendel
Stem cells
Unspecialised embryonic cells
Can be grown to replace tissuses, blood veins in the brain
Can be used to combat inherited conditions
Mendel
Worked out how characteristics were inherited
First to suggest seperately inherited characterisatics
Took along time for his ideas to be accepted
scientists didn't know about chromosomes and genes until after Mendel died.
Genes are found on chromosomes
Chromosomes are made from DNA which is a very long molecule with a double helix structire
Genes are short sections of DNA
everyone but identical twins have different genes
HUMANS have 23 pairs of chromosomes
1 pair is the sex chromosomes
Females- XX
Males XY
Alleles
Dominant- masks the effect of another
Recessive- effect is masked by that of anothers
PHenotype- PHysical apperarance
Genotype- the Genetic make up- which alleles does the individual inhreit
Hetrozygous- same alleles eg. DD or dd
Homozygous- two different alleles eg. Dd or dD
Inherited diseases
cystic fibrosis
caused by a recessive allele
this means the allele must be inherited from both parents
Can be passed on passed on from 2 parents who don't have it themselves as they could be carriers
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