Ch. 13 Assesments.pdf - Ryder Holguin Mr Wangler Pd 1 Ch 13 Assessments 1 A \u200btest cross\u200b is used to determine the genotype of a plant or animal 2

Ch. 13 Assesments.pdf - Ryder Holguin Mr Wangler Pd 1 Ch 13...

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Ryder Holguin Mr. Wangler Pd. 1 5/1/20 Ch. 13 Assessments 1. A test cross is used to determine the genotype of a plant or animal. 2. The offspring produced by inbreeding are homozygous for most traits. 3. The genotype ratio of the offspring of a cross between heterozygous white grapefruit and homozygous red grapefruit is B. 1:1 4. The cross used above is called a test cross. 5. To get the desired phenotype in a single plant, you need to crossover one parent that grows fast and one parent that is resistant to pesticides. 6. If a desired trait is regulated by many genes, it could take up to several generations to combine genes. 7. Advantages of selective breeding include desired features and consistent results. Disadvantages of selective breeding include the breeding of closely related animals that may cause loss of genetic variation and may even lead to disease. 8. Purebred animals do not exist in the wild because to be purebred, organisms must continue to inbreed within their own group. 9. If you were to do a test cross with multiple phenotypes, it will be very difficult to analyze and interpret the data. 10. Transgenic animals are produced by genetic engineering.
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