The flower color trait in radishes is an example of

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32) The flower color trait in radishes is an example of which of the following? A) A multiple allelic system B) Sex linkage C) Codominance D) Incomplete dominance E) Epistasis
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10 Answer: D Topic: Concept 14.3 Skill: Application/Analysis 33) A 1:2:1 phenotypic ratio in the F 2 generation of a monohybrid cross is a sign of 34) In snapdragons, heterozygotes for one of the genes have pink flowers, whereas homozygotes have red or white flowers. When plants with red flowers are crossed with plants with white flowers, what proportion of the offspring will have pink flowers? 35) Tallness ( T ) in snapdragons 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, red snapdragon is crossed with a plant homozygous for tallness and white flowers. What are the genotype and phenotype of the F 1 individuals? 36) Skin color in a certain species of fish is inherited via a single gene with four different alleles. How many different types of gametes would be possible in this system? A) 1 B) 2 C) 4 D) 8
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11 E) 16 Answer: C Topic: Concept 14.3 Skill: Knowledge/Comprehension 37) In cattle, roan coat color (mixed red and white hairs) occurs in the heterozygous ( Rr ) offspring of red ( RR ) and white ( rr ) homozygotes. Which of the following crosses would produce offspring in the ratio of 1 red : 2 roan : 1 white? Refer to the following to answer the questions below. Gene S controls the sharpness of spines in a type of cactus. Cactuses with the dominant allele, S , have sharp spines, whereas homozygous recessive ss cactuses have dull spines. At the same time, a second gene, N , determines whether cactuses have spines. Homozygous recessive nn cactuses have no spines at all.
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