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Powerpoint Presentation: Sex Linkage

 

Genetics Index

Chromosomes
Meiosis
Meiosis: Crossing over
Mitosis and Meiosis
Introduction to Mendelian Genetics
Test Cross
Codominance
Multiple Alleles
Pedigree Charts
Twin Studies
The dihybrid cross
Dihybrid Cross : Test Cross
Autosomal Linkage
The Genetic Diagram for Linked Genes
Calculating the cross over value using a test cross
Sex determination and sex linkage
Sex linkage
Blood Clotting and Haemophilia
The Retina and Daltonism
Genetic Modification
Cloning Animals
Cloning Plants

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Genetic diagram for sex linked genes

Genetic diagram for sex linked genes

 

Genetic diagram for sex linked genes

Genetic diagram for sex linked genes

Genetic diagram for sex linked genes

They discovered later that the white-eyed mutants are more likely to die before they hatch than the red-eyed flies

 

This gene has its locus on the X-chromosome.

It is said to be sex-linked.

 

In sex linkage the reciprocal crosses do not give the same results:

sex linkage reciprocal crosses

In mammals the Y-chromosome is small so it does not carry many genes. (They are characteristically inherited down through the males only.) In general, we can say that sex-linked genes are linked to the X-chromosome.

 

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