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Week 23 Week 23 Patterns of Heredity and Human Patterns of Heredity and Human Genetics Genetics Ch. 12 pg 308 From mother From father Click this

B23 ppt patterns of heredity and human genetics

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Page 1: B23 ppt patterns of heredity and human genetics

Week 23Week 23

Patterns of Heredity and Human Patterns of Heredity and Human GeneticsGenetics

Ch. 12 pg 308 From mother

From father

Click this

Page 2: B23 ppt patterns of heredity and human genetics

pedigreepedigree

A graphic representation of genetic A graphic representation of genetic inheritance, a diagram made up of inheritance, a diagram made up of symbolssymbols

Page 3: B23 ppt patterns of heredity and human genetics

traittrait

Any characteristic that is inheritedAny characteristic that is inherited

Page 4: B23 ppt patterns of heredity and human genetics

heterozygoheterozygousus

When an individual When an individual

• has two different alleles for a trait, ex. Bb, Rrhas two different alleles for a trait, ex. Bb, Rr

carrier carrier

Heterozygous Heterozygous individual,individual,Carries recessive alleleCarries recessive allele

Page 5: B23 ppt patterns of heredity and human genetics

cystic fibrosiscystic fibrosis

Results in the formation and accumulation of Results in the formation and accumulation of thick mucus in the lungs and digestive tractthick mucus in the lungs and digestive tract

Page 6: B23 ppt patterns of heredity and human genetics

Tay-Sachs DiseaseTay-Sachs DiseaseLacking enzyme that breaks down lipid in central Lacking enzyme that breaks down lipid in central

nervous system = accumulation of lipidnervous system = accumulation of lipid

Page 7: B23 ppt patterns of heredity and human genetics

PhenylketonuriaPhenylketonuria

Lacking enzyme that which converts Lacking enzyme that which converts aa phenylalanine to aa tyrosine = aa phenylalanine to aa tyrosine = accumulation of PHEaccumulation of PHE

Page 8: B23 ppt patterns of heredity and human genetics

Dominant Dominant trait trait

Results from one Results from one dominant dominant allele from allele from EITHER parent EITHER parent

Example: BExample: B

Results from one Results from one allele from allele from BOTH parentsBOTH parents

Example: bExample: b

Recessive Recessive trait trait

Click for list

Page 9: B23 ppt patterns of heredity and human genetics

fetusfetus

A developing A developing babybaby

Page 10: B23 ppt patterns of heredity and human genetics

cleft chin traitcleft chin trait

Simple dominant trait, indentation of Simple dominant trait, indentation of chinchin

Page 11: B23 ppt patterns of heredity and human genetics

widow’s peak hairline widow’s peak hairline traittrait

Simple dominant trait, hairline comes Simple dominant trait, hairline comes to a pointto a point

Page 12: B23 ppt patterns of heredity and human genetics

attached earlobes traitattached earlobes trait

Simple recessive trait, earlobes do not Simple recessive trait, earlobes do not hang freelyhang freely

Page 13: B23 ppt patterns of heredity and human genetics

hitchhiker’s thumb traithitchhiker’s thumb trait

Simple dominant trait, bend thumb Simple dominant trait, bend thumb backwards 30backwards 30oo

Page 14: B23 ppt patterns of heredity and human genetics

almond shaped eyes traitalmond shaped eyes trait

Dominant trait, eyesDominant trait, eyes

Page 15: B23 ppt patterns of heredity and human genetics

thick lips traitthick lips trait

Dominant trait, lipsDominant trait, lips

Page 16: B23 ppt patterns of heredity and human genetics

Huntington’s DiseaseHuntington’s Disease

Lethal genetic disorder Lethal genetic disorder caused by a rare dominant caused by a rare dominant allele, allele,

causes breakdown in certain causes breakdown in certain areas of the brainareas of the brain

Page 17: B23 ppt patterns of heredity and human genetics

And now for the quizAnd now for the quiz

Page 18: B23 ppt patterns of heredity and human genetics

1 Simple dominant trait, bend thumb 1 Simple dominant trait, bend thumb backwards 30backwards 30oo

Page 19: B23 ppt patterns of heredity and human genetics

2 Dominant trait, lips2 Dominant trait, lips

Page 20: B23 ppt patterns of heredity and human genetics

3 Lethal genetic disorder 3 Lethal genetic disorder caused by a rare caused by a rare dominant allele, dominant allele,

causes breakdown in causes breakdown in certain areas of the braincertain areas of the brain

Page 21: B23 ppt patterns of heredity and human genetics

4 A developing 4 A developing babybaby

Page 22: B23 ppt patterns of heredity and human genetics

5 Results in the formation and accumulation of 5 Results in the formation and accumulation of thick mucus in the lungs and digestive tractthick mucus in the lungs and digestive tract

Page 23: B23 ppt patterns of heredity and human genetics

6 Simple dominant trait, indentation of 6 Simple dominant trait, indentation of chinchin

Page 24: B23 ppt patterns of heredity and human genetics

7 Lacking enzyme that which converts 7 Lacking enzyme that which converts aa phenylalanine to aa tyrosine = aa phenylalanine to aa tyrosine = accumulation of PHEaccumulation of PHE

Page 25: B23 ppt patterns of heredity and human genetics

8 Results from 8 Results from one dominant one dominant allele from allele from EITHER parent EITHER parent

Example: BExample: B

9 Results from 9 Results from one allele from one allele from BOTH parentsBOTH parents

Example: bExample: b

Click for list

Page 26: B23 ppt patterns of heredity and human genetics

10 Any characteristic that is inherited10 Any characteristic that is inherited

Page 27: B23 ppt patterns of heredity and human genetics

11 Simple dominant trait, hairline 11 Simple dominant trait, hairline comes to a pointcomes to a point

Page 28: B23 ppt patterns of heredity and human genetics

12 A graphic representation of genetic 12 A graphic representation of genetic inheritance, a diagram made up of inheritance, a diagram made up of symbolssymbols

Page 29: B23 ppt patterns of heredity and human genetics

13 Simple recessive trait, earlobes do 13 Simple recessive trait, earlobes do not hang freelynot hang freely

Page 30: B23 ppt patterns of heredity and human genetics

14 When an individual 14 When an individual

• has two different alleles for a trait, ex. Bb, Rrhas two different alleles for a trait, ex. Bb, Rr

15 Heterozygous 15 Heterozygous individual, carries individual, carries recessive allelerecessive allele

Page 31: B23 ppt patterns of heredity and human genetics

16 Lacking enzyme that breaks down lipid in 16 Lacking enzyme that breaks down lipid in central nervous system = accumulation of lipidcentral nervous system = accumulation of lipid

Page 32: B23 ppt patterns of heredity and human genetics

And now for the answersAnd now for the answers

Page 33: B23 ppt patterns of heredity and human genetics

hitchhiker’s thumb traithitchhiker’s thumb trait

1 Simple dominant trait, bend thumb 1 Simple dominant trait, bend thumb backwards 30backwards 30oo

Page 34: B23 ppt patterns of heredity and human genetics

thick lips traitthick lips trait

2 Dominant trait, lips2 Dominant trait, lips

Page 35: B23 ppt patterns of heredity and human genetics

Huntington’s DiseaseHuntington’s Disease

3 Lethal genetic disorder 3 Lethal genetic disorder caused by a rare caused by a rare dominant allele, dominant allele,

causes breakdown in causes breakdown in certain areas of the braincertain areas of the brain

Page 36: B23 ppt patterns of heredity and human genetics

fetusfetus

4 A developing 4 A developing babybaby

Page 37: B23 ppt patterns of heredity and human genetics

cystic fibrosiscystic fibrosis

5 Results in the formation and accumulation of 5 Results in the formation and accumulation of thick mucus in the lungs and digestive tractthick mucus in the lungs and digestive tract

Page 38: B23 ppt patterns of heredity and human genetics

cleft chin traitcleft chin trait

6 Simple dominant trait, indentation of 6 Simple dominant trait, indentation of chinchin

Page 39: B23 ppt patterns of heredity and human genetics

PhenylketonuriaPhenylketonuria

7 Lacking enzyme that which converts 7 Lacking enzyme that which converts aa phenylalanine to aa tyrosine = aa phenylalanine to aa tyrosine = accumulation of PHEaccumulation of PHE

Page 40: B23 ppt patterns of heredity and human genetics

Dominant Dominant trait trait

8 Results from 8 Results from one dominant one dominant allele from allele from EITHER parent EITHER parent

Example: BExample: B

9 Results from 9 Results from one allele from one allele from BOTH parentsBOTH parents

Example: bExample: b

recessive recessive trait trait

Click for list

Page 41: B23 ppt patterns of heredity and human genetics

traittrait

10 Any characteristic that is inherited10 Any characteristic that is inherited

Page 42: B23 ppt patterns of heredity and human genetics

widow’s peak hairline widow’s peak hairline traittrait

11 Simple dominant trait, hairline 11 Simple dominant trait, hairline comes to a pointcomes to a point

Page 43: B23 ppt patterns of heredity and human genetics

pedigreepedigree

12 A graphic representation of genetic 12 A graphic representation of genetic inheritance, a diagram made up of inheritance, a diagram made up of symbolssymbols

Page 44: B23 ppt patterns of heredity and human genetics

attached earlobes traitattached earlobes trait

13 Simple recessive trait, earlobes do 13 Simple recessive trait, earlobes do not hang freelynot hang freely

Page 45: B23 ppt patterns of heredity and human genetics

heterozygoheterozygousus

14 When an individual 14 When an individual

• has two different alleles for a trait, ex. Bb, Rrhas two different alleles for a trait, ex. Bb, Rr

carrier carrier

15 Heterozygous 15 Heterozygous individualindividual

Page 46: B23 ppt patterns of heredity and human genetics

Tay-Sachs DiseaseTay-Sachs Disease16 Lacking enzyme that breaks down lipid in 16 Lacking enzyme that breaks down lipid in

central nervous system = accumulation of lipidcentral nervous system = accumulation of lipid

Page 47: B23 ppt patterns of heredity and human genetics

Mahalo!Mahalo!