Biology - Chp 14 - Human Heredity - PowerPoint

[object Object],[object Object]

Human Chromosomes ,[object Object],[object Object]

[object Object],[object Object],23 Diploid 46

Sex Chromosomes ,[object Object],[object Object],[object Object],[object Object]

Q: Why are males & females born in a roughly 50:50 ratio? ,[object Object],X X Y

Human Traits ,[object Object],[object Object]

[object Object],[object Object],[object Object]

Polygenic Traits ,[object Object],[object Object]

The Human Genome ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],Humans aren’t easy test subjects

Blood Group Genes ,[object Object],[object Object],[object Object],[object Object]

Q: How do scientists identify recessive alleles that cause these disorders ,[object Object]

PKU – phenylketonuria ,[object Object],[object Object],[object Object],[object Object],[object Object]

Tay Sachs ,[object Object],[object Object],[object Object],[object Object]

Achondroplasia - dwarfism ,[object Object],[object Object],[object Object]

Huntington's ,[object Object],[object Object]

Huntington's affect on the brain

Codominant ,[object Object],[object Object]

Cystic Fibrosis (CF) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Sickle Cell Disease ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Q: Why do so many African Americans carry the sickle cell allele? ,[object Object],[object Object]

Where malaria is common Where sickle cell is common

Dominant or Recessive ,[object Object],[object Object],Dominant

[object Object],[object Object],[object Object],[object Object]

Sex Linked Genes ,[object Object],[object Object],X

Colorblindness ,[object Object],[object Object],[object Object]

Q: Why the difference between the sexes? ,[object Object],[object Object],just one Two copies

Hemophilia ,[object Object],[object Object],[object Object],[object Object],Blood clotting

Duchenne Muscular Dystrophy ,[object Object],[object Object],[object Object],[object Object]

X-Chromosome Inactivation ,[object Object],[object Object],[object Object]

nondisjunction ,[object Object]

Down Syndrome ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Turners Syndrome (female) ,[object Object],[object Object],[object Object]

Klinefelters Syndrome (males) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Human DNA Analysis ,[object Object],[object Object]

Testing for alleles ,[object Object],[object Object],[object Object],[object Object]

DNA fingerprinting ,[object Object],[object Object],[object Object]

The Human Genome Project ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Promoter ,[object Object],[object Object],[object Object]

A Breakthrough for Everyone ,[object Object],[object Object]

Ethical Issues in Human Genetics ,[object Object],[object Object],[object Object]

Biology - Chp 14 - Human Heredity - PowerPoint

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Biology - Chp 14 - Human Heredity - PowerPoint