Genetics Chapter 8. Gregor Mendel: Father of Genetics Genetics: study of heredity Heredity: passing...
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Transcript of Genetics Chapter 8. Gregor Mendel: Father of Genetics Genetics: study of heredity Heredity: passing...
![Page 1: Genetics Chapter 8. Gregor Mendel: Father of Genetics Genetics: study of heredity Heredity: passing traits from parent to offspring Used peas to study.](https://reader037.fdocuments.us/reader037/viewer/2022110403/56649e6a5503460f94b66f86/html5/thumbnails/1.jpg)
Genetics
Chapter 8
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Gregor Mendel: Father of Genetics
Genetics: study of heredity
Heredity: passing traits from parent to offspring
Used peas to study heredity
![Page 3: Genetics Chapter 8. Gregor Mendel: Father of Genetics Genetics: study of heredity Heredity: passing traits from parent to offspring Used peas to study.](https://reader037.fdocuments.us/reader037/viewer/2022110403/56649e6a5503460f94b66f86/html5/thumbnails/3.jpg)
Why Peas?
1. Several Traits 2. Control mating 3. Small, grow easily, and matures
quickly
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Alleles: Different versions of a geneEx: White and Purple Flowers
![Page 5: Genetics Chapter 8. Gregor Mendel: Father of Genetics Genetics: study of heredity Heredity: passing traits from parent to offspring Used peas to study.](https://reader037.fdocuments.us/reader037/viewer/2022110403/56649e6a5503460f94b66f86/html5/thumbnails/5.jpg)
Mendel’s Experiment
Monohybrid Cross: One pair of contrasting traits. Ex: Mating a plant with purple flowers with white
flowers
True-breeding: All offspring would have only one form of the trait Ex: Purple-flowering plant only has purple-
flowered offspring
![Page 6: Genetics Chapter 8. Gregor Mendel: Father of Genetics Genetics: study of heredity Heredity: passing traits from parent to offspring Used peas to study.](https://reader037.fdocuments.us/reader037/viewer/2022110403/56649e6a5503460f94b66f86/html5/thumbnails/6.jpg)
![Page 7: Genetics Chapter 8. Gregor Mendel: Father of Genetics Genetics: study of heredity Heredity: passing traits from parent to offspring Used peas to study.](https://reader037.fdocuments.us/reader037/viewer/2022110403/56649e6a5503460f94b66f86/html5/thumbnails/7.jpg)
Mendel’s Experiments
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Vocabulary
Dominant: (A) Expressed in appearance when the individual has
one copy Recessive: (a)
Not noticeable in appearance when individual has one copy
Individual must have two copies of recessive allele to express the trait
Homozygous: AA or aa
Heterozygous: Aa
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More Vocabulary
Genotype: Genetic make up (ex: Pp)
Phenotype: Physical Appearance (ex: Purple flowers)
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Punnett Square-predicts outcome of a cross 1 pair of contrasting traits btwn 2 individuals
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Ratios
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Test Cross
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Law of Segregation
Alleles for a trait separate when gametes are formed
50% chance that one allele will go into a gamete
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Law of Independent Assortment
Alleles of different genes separate independently of each other during meiosis
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Dihybrid Cross: Cross that involve two traits