1. Warm Up / EOC Prep
The chances of developing cancer, diabetes, or sickle-cell anemia are higher if a family member also has the disorder because they are —
a. passed through blood contact b. related to diet
c. highly infectious d. genetically based
In corn plants, green (G) is dominant to albino (g). According to the Punnett square, what is the chance of this heterozygous cross producing albino corn plants?
a. Two in four b. Three in four
c. Four in four d. One in four

2. Agenda Warm-up Vocabulary Puzzle Pedigree Notes
Pedigree Practice Problems
Clean-up
Cool-down

3. Dominant
Recessive
Phenotype
Test cross
Genotype
Translation
Transcription
Genetics
Codon
Heredity
Mutation
Gamete
Heterozygous
Homozygous
Punnett square
Trait
Codominance
Gregor Mendel
Incomplete
Gene
Pea plants
Allele
Amino acids

5. Pedigrees

6. Generations
Parental generation (P)- first two individuals crossed in a breeding experiment
F1 generation- offspring of the P generation
F2 generation- offspring of the F1 generation

7. chart that shows the relationships within a family
PEDIGREE
chart that shows the relationships within a family

8. Sample Pedigree

9. Sample Pedigree

11. Pedigree Basics
Males are squares, females are circles, and unborn babies are triangles or octagons
Shaded figures represent individuals with the trait, a carrier could be 1/2 shaded

12. Pedigree Basics The vertical lines indicate offspring.
The horizontal lines indicate matings.
Generations are numbered with roman numerals (I, II, II, IV) from top to bottom
People within generations are numbered (1,2,3) from left to right

13. Pedigree Basics
Pedigrees are very helpful in determining how a genetic disorder is inherited. A pedigree can be mapped out to determine if individuals are carriers or if their children might inherit the disorder.
Carriers are individuals who are heterozygous for an inherited disorder but do not show symptoms. Carriers can then pass on the allele for the disorder on to their children.

14. Sample Pedigree

15. Sample Pedigree

17. Karyotype
Genetic disorders may also be detected by using karyotypes, which are photos of the chromosomes in a dividing cell arranged by size.
The risks of passing on a genetic
disorder to offspring can be assessed by
genetic counseling
prenatal testing
analyzing a pedigree.

18. AMNIOCENTESIS
A technique used to determine the genetic traits of a baby before it is born

21. REVIEW
A chart that shows how traits are passed within a family is called…

22. pedigree

23. In a pedigree, squares = _____ and circles = ______

24. Males and females

25. Sex-linked recessive- half filled circles (carriers)
Autosomal dominant- more common, in every generation
Autosomal recessive- less common, skips a generation

26. Cool-Down
Name the correct mode of inheritance… 1- A combination of the dominant and recessive creates a new phenotype. 2- Neither allele is dominant, but both are expressed at the same time. 3- The trait is found on either the X or Y chromosome.

27. Warm-up / EOC Prep
A genetic pedigree showing that only males are affected by a certain disorder is evidence of what type of inheritance?
A. Dominant B. Sex-linked C. Recessive D. Passive
The reduction of the chromosome number during meiosis is most important for:
keeping the amount of DNA in the cell at a minimum level
preventing the nucleus from becoming larger with each cell division
maintaining the chromosome number during sexual reproduction
allowing the growth of the cell without increasing the DNA content

28. Agenda Warm-up Vocab Genetics Quiz Pedigree Practice Problems Clean-up
Cool-down

29. What is this called? What can you tell me about I2, II2, III2?

30. What is this called? What can you tell me about I1,II7,II5,III8?