Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Chapter 14.2, Problem 1CC
Summary Introduction
To determine: The proportion of homozygous dominant, homozygous recessive, and heterozygous offspring after AA × Aa genetic cross.
Concept introduction:
During gamete formation, two alleles of a gene segregate into different gametes. This is based on the Mendel’s law of segregation. After the genetic cross, the possible allele combinations are predicted, which determines the genotype of the offspring. The offspring can be homozygous dominant (both alleles are dominant), homozygous recessive (both alleles are recessive), or heterozygous (one dominant and one recessive allele).
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for any gene with a dominant allele and recessive allele a what proportions of the offspring from an AA x Aa cross are expected to be homozygous dominant, homozygous recessive and heterozygous?
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Chapter 14 Solutions
Campbell Biology: Custom Edition
Ch. 14.1 - DRAW IT Pea plants heterozygous for flower...Ch. 14.1 - WHAT IF? List all gametes that could be made by a...Ch. 14.1 - MAKE CONNECTIONS In some pea plant crosses, the...Ch. 14.2 - Prob. 1CCCh. 14.2 - Two organisms, with genotypcs BbDD and BBDd, are...Ch. 14.2 - WHAT IF? Three characters (flower color, seed...Ch. 14.3 - What two properties, one structural and one...Ch. 14.3 - If a man with type AB blood marries a woman with...Ch. 14.3 - WHAT IF? A rooster with gray feathers and a hen...Ch. 14.4 - Beth and Tom each have a sibling with cystic...
Ch. 14.4 - Prob. 2CCCh. 14.4 - Prob. 3CCCh. 14.4 - MAKE CONNECTIONS In Table 14.1, note the...Ch. 14 - When Mendel did crosses of true-breeding purple-...Ch. 14 - DRAW IT Redraw the Punnett Square on The right...Ch. 14 - Inheritance patterns are often more complex than...Ch. 14 - Both members of a couple know that they are...Ch. 14 - DRAW IT Two pea plants heterozygous for the...Ch. 14 - A man with type A blood marries a woman with type...Ch. 14 - A man has six fingers on each hand and six toes on...Ch. 14 - DRAW IT A pea plant heterozygous for inflated pods...Ch. 14 - Flower position, stem length, and seed shape are...Ch. 14 - Hemochromatosis is an inherited disease caused by...Ch. 14 - The genotype of F1, individuals in a tetrahybrid...Ch. 14 - What is the probability that each of thc following...Ch. 14 - Prob. 9TYUCh. 14 - Prob. 10TYUCh. 14 - In tigers, a recessive allele of a particular gene...Ch. 14 - In maize (com) plants,a dominant allele I inhibits...Ch. 14 - The pedigree belowtraces the inheritance of...Ch. 14 - Imagine that you are a genetic counselor, and a...Ch. 14 - EVOLUTION CONNECTION Over the past half century,...Ch. 14 - SCIENTIFIC INQUIRY You are handed a mystery pea...Ch. 14 - Prob. 17TYUCh. 14 - SYNTHESIZE YOUR KNOWLEDGE Just for fun, imagine...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- What is a reciprocal cross? Suppose that a gene is found as a wildtype (functional) allele and a recessive mutant (nonfunctional)allele. What would be the expected outcomes of reciprocal crossesif a true-breeding normal individual was crossed to a true-breedingindividual carrying the mutant allele? What would be the results ifthe gene is maternally inherited?arrow_forwardGregor Mendel discovered the basis of heredity with his sweet pea plant experiments. In his studies, he determined that certain traits, such as pod color and pea shape, express complete dominance. A cross occurs between a plant with heterozygous yellow pods and wrinkled peas and a plant with green pods and heterozygous round peas. What is the probability that the offspring will exhibit recessive genes for both traits? A - 1/2B - 1/4C - 1/8D - 1/16arrow_forwardIn the cross TtPpAa x ttPpaa, what fraction of offspring are predicted to be homozygous recessive for at least two of the three traits?arrow_forward
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- Joe has a white cat named Sam. When Joe crosses Sam with a black cat, he obtains ½ white kittens and ½ black kittens. When the black kittens are interbred, all the kittens that they produce are black. > Is Sam's genotype homozygous dominant, homozygous recessive, or heterozygous? Based on these results, which coat color in cats would you conclude is a recessive trait? 1. white 2. black 3. homozygous dominant 4. homozygous recessive 5. heterozygousarrow_forwardIn flowers, purple flower color is dominant and denoted by "P" while white flower color is recessive and is denoted by "p". In a monohybrid cross between 2 heterozygous purple flowers, what is the expected phenotypic offspring ratio?arrow_forwardRabbits with the genotype CC® are black, heterozygous rabbits C°CW appear brown, and rabbits that are CWCW have white fur. What is the phenotypic and genotypic ratio of the offspring of a cross between a brown and a white rabbit?arrow_forward
- Gregor Mendel discovered the basis of heredity with his sweet pea plant experiments. In his studies, he determined that certain traits, such as pod color and pea shape, express complete dominance. Trait Dominant Recessive Pod color Yellow Green Pea shape Round Wrinkled A cross occurs between a plant with heterozygous yellow pods and wrinkled peas and a plant with green pods and heterozygous round peas. What is the probability that the offspring will exhibit recessive genes for both traits? a) 1/2 b) 1/4 c) 1/8 d) 1/16arrow_forwardIn snapdragon plants, flower color follows an incomplete dominance inheritance pattern. Homozygous dominant plants have red flowers, heterozygotes have pink flowers, and homozygous recessive plants have white flowers. Complete the following cross and identify what percentage of the offspring are each color. Cross- Homozygous dominant by heterozygous plants what % have red flowers what % have pink flowers what % have white flowersarrow_forwardAn allelic series determines coat color in rabbits: C (full color), ceh (chinchilla, gray color), c* (Himalayan, white with black extremities), and c (albino, all white). The C allele is dominant over all others, h is dominant over 4 and c, ª is dominant over c, and c is recessive to all other alleles. This dominance hierarchy can be summarized as C> cch > ch> c. The rabbits in the table are crossed and produce the progeny shown. Cross Parents Offspring A full color x albino 50% full color, 50% albino В Himalayan x albino 50% Himalayan, 50% albino full color x albino 50% full color, 50% chinchilla D full color x Himalayan 50% full color, 25% Himalayan, 25% albino E full color x full color 75% full color, 25% albino Match the parental genotypes to the letter corresponding to the appropriate cross listed in the table. A В D E Answer Bank Cc x Cc Ac x cc СС х се Ce xce Ce x cc Се х сс A x cearrow_forward
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