Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 12, Problem 18TYK
Design an Experiment Imagine that you are a breeder of Labrador retriever dogs. Labs can be black, chocolate brown, or yellow. Suppose that a yellow Lab is donated to you and you need to know its genotype. You have a range of dogs with known genotypes. What cross would you make to determine the genotype of the donated dog? Explain how the resulting puppies show you the Lab’s genotype.
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A cross was made between a white male dog and two different black females. The first female gave birth to eight black pups, and the second female gave birth to four white and three black pups. What are the likely genotypes of the male parent and the two female parents? Use Punnett’s squares to support your answer. Explain whether you are uncertain about any of the genotypes.
you perform a cross of two heterozygous, red-eyed flies. They have 100 offspring. How many of these offspring do you predict will have red eyes? Show your work using a Punnett square. [Use letters R and r to designate the alleles]
The next pedigree shows how the ABO blood type is being passed on from parents to offspring. Use that pedigree to answer the questions below.
How many generations are there? ____________
Can you tell if the trait is dominant or recessive? Why or why not? ________________________________________________________________
Determine the genotypes of all individuals in the pedigree below. Use the following format for the genotypes.
Chapter 12 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 12.1 - Two pairs of traits are segregating in a cross....Ch. 12.1 - If, instead, the four phenotypes in question 1...Ch. 12.2 - Palomino horses have a golden coat color, with a...Ch. 12.2 - A true-breeding rabbit with agouti (mottled,...Ch. 12 - The dominant C allele of a gene that controls...Ch. 12 - In peas, the allele Le produces tall plants and...Ch. 12 - Prob. 3TYKCh. 12 - What genotypes, and in what frequencies, will be...Ch. 12 - In addition to the two genes in problem 4, assume...Ch. 12 - Prob. 6TYK
Ch. 12 - In cats, the genotype AA produces tabby fur color;...Ch. 12 - Prob. 8TYKCh. 12 - The ability of humans to taste the bitter chemical...Ch. 12 - A man is homozygous dominant for alleles at 10...Ch. 12 - In guinea pigs, an allele for rough fur (R) is...Ch. 12 - Prob. 12TYKCh. 12 - Some recessive alleles have such a detrimental...Ch. 12 - In chickens, feathered legs are produced by a...Ch. 12 - A mix-up in a hospital ward caused a mother with O...Ch. 12 - Having malformed hands with shortened fingers is a...Ch. 12 - Prob. 17TYKCh. 12 - Design an Experiment Imagine that you are a...Ch. 12 - Prob. 19TYKCh. 12 - Prob. 1ITDCh. 12 - Prob. 2ITDCh. 12 - Half of the worlds population eats rice at least...
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- Make a pedigree chart based on the situation Blood Type • Blood type is determined by the presence of several different proteins found on the surface of red blood cells. Blood type A has the A antigens on the surface of red blood cells. Blood type B has the B antigens on the surface of red blood cells. Blood type AB has both A and B antigens. Blood type O has neither. Situation: Guinevere decides to trace the inheritance of her blood type through her family, all the way back to her great-grandmother Natalia. Guinevere's great-grandmother Natalia, has type A blood. Natalia and her husband Claude have five children-three sons, Miguel (who has blood type A), Mark (who has blood type B) and David (who has type AB blood); a daughter (Jane) with type O blood and another daughter (Janella) with type A blood. Jane marries a man and they have two sons (Marco and Polo) who both are blood type A and a daughter (Mara) who has blood type B; Janella on the other hand marries a man and together have…arrow_forwardIf a chicken has black and white feathers, how could you describe the genes for feather color? If a plant has yellow flowers and is crossed with a plant with red flowers and the resulting offspring has orange flowers, what can you infer about this plant's genetics?arrow_forwardBiology When both parents are heterozygous carriers of the recessive allele that causes albinism, what percentage of their offspring will be heterozygous carriers of the albinism allele? Answer Choices: A: 25% B: 50% C: 75% D: 100%arrow_forward
- Choose one characteristic and make a pedigree for your family for that characteristicarrow_forwardDesign a cross that would allow you to distinguish between two plants showing a dominant phenotype but could be either homozygous or heterozygous for the dominant allele.arrow_forwardExamine the pedigree below. Write the genotype for each individual in the family. The two children of the original couple are both carriers. How do you know? The bottom one plsarrow_forward
- The cross between a female white giraffe and a pigmented male resulted in white offspring. What is the genotype of the father? Draw the test cross.arrow_forwarda diagram of a pedigree showsarrow_forwardA) A woman with type O blood is expecting a child. Her husband is type A and her husband's parents both had type AB blood. What will be their child’s blood type? 2. A)A woman with type O blood is expecting a child. Her husband is type A and her husband's parents both had type AB blood. What will be their child’s blood type? B) A couple has one child with type AB blood. If one parent is heterozygous for blood type A and the other parent is homozygous for their blood type, what are the chances of their future children having: Type A blood? Type B blood? Type AB blood? O blood?arrow_forward
- Use a Punnett square to predict the offspring in a cross between a tall pea plant (heterozygous) and a tall pea plant (heterozygous). What is the genoypic ratio of the offspring?arrow_forwardWhat is the reason for doing a test cross? a. to identify heterozygous individuals with the dominant phenotype b. to determine which allele is dominant and which is recessive c. to identify homozygous recessive individuals in the F2 d. to determine if two genes assort independentlyarrow_forwardFigure 10.7 Why was Dolly a Finn-Dorset and not a Scottish Blackface sheep?arrow_forward
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