1. Title: Biology 2/22/07 Objectives: Class Topics
6/7/2019
Title: Biology 2/22/07
Objectives:
To learning about autosomal human genetic disorders and review for the Chapter 8 Quiz 3.
Class Topics
Hand in Gene Spy W.S. before the bell rings please
Correct pedigree lab
Autosomal Human Genetic Disorders
Quiz review
“They (fathers) give it (the Y chromosome) to their sons because if they give it to their daughter, they’re not a daughter.”
Nathan Steele
Friday, June 07, :01 AM

2. Class Assignments W.S. “X marks the spot” 2/22/07
6/7/2019
Class Assignments
What
By When
W.S. “X marks the spot” 2/22/07
Chapter 8 Quiz 3 2/26/07
Due this class period
Due next class period
Due in the future

3. 6/7/2019
Grade Sheet
2A – p. 157 (5 pts.)

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From:

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6. Traits influenced by environment
6/7/2019
Traits influenced by environment
Hydrangea
Color is influenced by the soil pH
Acidic = blue flowers
Neutral, basic – pink/red flowers
Skin color
Tanning
Traits determined by nutrition
Studied by scientists using identical twins

7. Twins 2 eggs + 2 sperm - fraternal 1 egg + 1 sperm - identical
6/7/2019
2 eggs + 2 sperm - fraternal
siblings - no closer genetically
1 egg + 1 sperm - identical
same exact genome
used in genetic studies
conjoined or Siamese twins aren’t separated
Twins

8. Calico cat: State cat of Maryland!
6/7/2019
Calico cat: State cat of Maryland!
From:

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Links
Sex-linked Inheritance quiz
Blue People of Kentucky

10. Autosomal Human Genetic Disorders
6/7/2019
Cystic Fibrosis
Recessive
mostly European ancestory
Thick mucus clogs breathing passages
Sickle-Cell Anemia
Mostly African or Mediterranean ancestory
Heterozygous immune to malaria
Causes RBC to be sickle shaped
Autosomal Human Genetic Disorders

11. Autosomal Human Genetic Disorders
6/7/2019
Olney’s albino squirrels
Albinism
Recessive
Can’t produce melanin
Tay-Sachs
Mostly Eastern European Jews
Nervous system breaks down (death before age 5
Autosomal Human Genetic Disorders

12. Autosomal Human Genetic Disorders
6/7/2019
Phenylketonuria (PKU)
Recessive
Can’t live without special diet
Huntington’s Disease
Dominant
Muscular and nervous systems break down in late 30’s early 40’s (dead in years)
Autosomal Human Genetic Disorders

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14. Chapter 8 Quiz 3 Pedigree X-linked crosses
6/7/2019
Chapter 8 Quiz 3
Pedigree
Read and draw
Know why they are recessive or dominant and sex-linked or autosomal
X-linked crosses
Just like on board
Inheritance of sex-linked chromosomes
Examples of multiple alleles and polygenic traits
Human genetic diseases (matching)

15. Gene Therapy Replacing defective gene Cystic fibrosis
6/7/2019
Gene Therapy
Replacing defective gene
Cystic fibrosis
Incorporated into virus
Inject DNA into cell
Stem cell research
What’s a stem cell?
How would this help?

16. Review Magazine article “Go ahead and kiss your cousin”
6/7/2019
Review Magazine article “Go ahead and kiss your cousin”
Why are neural degenerative diseases 8 times more common in Bradford than the rest of the UK? (62)
What are lethal alleles (62)?
Why is it likely that 80% of marriages in history were between 2nd cousins or closer? (62)
Why would some rich families encourage cousin marriages? (63)
Why do some cases of inbreeding lead to many diseases while others do not? (63)
What is outbreeding? (64)
What are some problems with outbreeding? (64)

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