Ch 15 Test Bank - 1. A green budgie is crossed with a blue...

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1. A green budgie is crossed with a blue budgie. Which of the following results is not possible? a. all of the above are possible, but with different probabilities * 2. People with sickle-cell trait a. all of the above * 3. In cattle, roan coat color (mixed red and white hairs) occurs in the heterozygous (Rr) offspring of red (RR) and white (rr) homozygotes. When two roan cattle are crossed, the phenotypes of the progeny are found to be in the ratio of 1 red:2 roan: 1 white. Which of the following crosses could produce the highest percentage of roan cattle? a. red x white * Use the following information to answer the question below. A woman who belongs to blood group A and is Rh positive has a daughter who is O positive and a son who is B negative. Rh positive is a simple dominant over Rh negative. 4. Which of the following is a possible genotype for the mother? a. I A I O * 5. Tallness (T) is dominant to dwarfness (t), while red (R) flower color is dominant to white (r). The heterozygous condition results in pink (Rr) flower color . A dwarf, homozygous red snapdragon is crossed with a plant homozygous for tallness and white flowers. What are the genotype and phenotype of the F1 individuals? a. TtRr – tall and pink * 6. A 1:2:1 phenotypic ratio in the F2 generation of a monohybrid cross is a sign of a. complete dominance * 7. A sexually reproducing animal has two unlinked genes, one for head shape (H) and one for tail length (T). Its genotype is HhTt. Which of the following genotypes is possible in a gamete from this organism? a. HT * Albinism is caused by a recessive autosomal allele . A man and a woman, both normally pigmented, have an albino child together. 8. The couple decides to have a second child. What is the probability that this child will be albino? a. 1/4* 9. The probability that four coins will come up heads when flipped simultaneously is a. 1/16 * 10. A 9 purple to 7 white phenotype in sweet peas in the F2 generation is most likely due to a. Epistasis * 11. A 9:3:3:1 phenotypic ratio is characteristic of a. a dihybrid cross * 12. Mendel’s law of segregation was nearly impossible for most biologists to understand until there was a general understanding of a. Meiosis * 13. Which of the following terms is LEAST related to the others? a.
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Ch 15 Test Bank - 1. A green budgie is crossed with a blue...

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