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Understanding Gametes and Genetic Crosses in Pea Plants and Dachshunds

This quiz explores genetic principles through questions about gamete formation and inheritance patterns in pea plants and dachshunds. It delves into the genetic crosses of flower and seed colors in peas, dominant and recessive traits in dachshunds, and the concepts of dominance, blending inheritance, and dihybrid crosses. Students will apply their knowledge of Mendelian genetics to determine gametes produced, offspring traits, and probabilities of specific characteristics. Perfect for biology students learning about genetics!

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Understanding Gametes and Genetic Crosses in Pea Plants and Dachshunds

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  1. Bio 130 – Quiz March 28

  2. Q. 1 - Imagine crossing a pea heterozygous at the loci for flower color (white versus purple) and seed color (yellow versus green) with a second pea homozygous for flower color (white) and seed color (yellow). What types of gametes will the first pea produce? • two gamete types: white/white and purple/purple • two gamete types: white/yellow and purple/green • four gamete types: white/yellow, white/green, purple/yellow, purple/green • four gamete types: white/purple, yellow/green, white/white, and purple/purple • one gamete type: white/purple/yellow/green

  3. Q. 2 - A cross between homozygous purple-flowered and homozygous white-flowered pea plants results in offspring with purple flowers. This demonstrates • the blending model of genetics. • true-breeding. • dominance. • a dihybrid cross. • the mistakes made by Mendel.

  4. Q. 3 – In dachsunds Brown hair (B) is dominant to yellow hair (b). Curly hair (C) is dominant to straight hair (c). We mate a female BBcc with a male bbCC. What is the chance of a puppy with yellow curly hair? • 0 • 1/4 • 1/8 • 3/8 • 3/16

  5. Q. 4 – In dachsunds Brown hair (B) is dominant to yellow hair (b). Curly hair (C) is dominant to straight hair (c). We mate a female BbCc with a male bbCC. What is the chance of a puppy with yellow curly hair? • ½ • ¼ • 1/8 • 3/8 • 1/16

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