Genetics

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3

Slide 19

Sex linked Inheritance in Drosophila

Slide 20

Slide 21

General Pedigree refer to NOB2 (new ed) pages 328-332

Slide 22

Autosomal Dominant Pedigree

Look for:

Trait in every generation

Once leaves the pedigree does not return

Every person with the trait must have a parent with the trait

Males and females equally affected

Slide 23

Autosomal dominant pedigree

Slide 24

Slide 25

Autosomal Recessive Pedigree

Look for:

Skips in generation

Unaffected parents can have affected children

Affected person must be homozygous

Males and females affected equally

Slide 26

Autosomal recessive

Slide 27

Slide 28

Sex linked Dominant pedigrees

Look for:

More males being affected

Affected males passing onto all daughter (dominant) and none of his sons

Every affected person must have an affected parent

Slide 29

Sex linked recessive pedigrees

More ales being affected

Affected female will pass onto all her sons

Affected male will pass to daughters who will be a carrier (unless mother also affected)

Unaffected father and carrier mother can produce affected sons

Slide 30

Slide 31

Sex linked recessive

Slide 32

Slide 33

Questions to complete

Complete the following:

Biochallenge pg 334, ques 2

Review ques pgs 335-338

Ques 6,7,8, 9, 10, 11, 12, 13, 14,