Warm Up / EOC Prep 1.The chances of developing cancer, diabetes, or sickle-cell anemia are higher if...
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![Page 1: Warm Up / EOC Prep 1.The chances of developing cancer, diabetes, or sickle-cell anemia are higher if a family member also has the disorder because they.](https://reader035.fdocuments.us/reader035/viewer/2022062516/56649e205503460f94b0b595/html5/thumbnails/1.jpg)
Warm Up / EOC Prep1. 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
2. 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
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Agenda
• Warm-up• Vocabulary Puzzle• Pedigree Notes• Pedigree Practice Problems• Clean-up• Cool-down
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• 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
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Pedigrees
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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
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chart that shows the relationships within a
family
PEDIGREE
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QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Sample Pedigree
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Sample Pedigree
![Page 10: Warm Up / EOC Prep 1.The chances of developing cancer, diabetes, or sickle-cell anemia are higher if a family member also has the disorder because they.](https://reader035.fdocuments.us/reader035/viewer/2022062516/56649e205503460f94b0b595/html5/thumbnails/10.jpg)
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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
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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
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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.
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QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
Sample Pedigree
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Sample Pedigree
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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.
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A technique used to determine the genetic traits of a baby before
it is born
AMNIOCENTESIS
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• REVIEW• A chart that shows how traits are passed
within a family is called…
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• pedigree
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• In a pedigree, squares = _____ and circles = ______
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• Males and females
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• Sex-linked recessive- half filled circles (carriers)
• Autosomal dominant- more common, in every generation
• Autosomal recessive- less common, skips a generation
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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.
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Warm-up / EOC Prep1. 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
2. The reduction of the chromosome number during meiosis is most important for:A.keeping the amount of DNA in the cell at a minimum level B.preventing the nucleus from becoming larger with each cell division C.maintaining the chromosome number during sexual reproduction D.allowing the growth of the cell without increasing the DNA content
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Agenda
• Warm-up• Vocab• Genetics Quiz• Pedigree Practice Problems• Clean-up• Cool-down
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What is this called?What can you tell me about I2, II2, III2?
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What is this called?What can you tell me about I1,II7,II5,III8?