Genetics Exam 3-2Practice Questions

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4/10/23, 11:39 PM Genetics Exam 3 Practice Questions https://docs.google.com/forms/d/e/1FAIpQLSdunVf8d4TGegJLCYgWJMXlB_YZXoSqK-UmN9zL8Ap3Ki5ONw/formResponse 1/10 Specific "Practice Problems for Exam 3" These are great questions to get you ready for the exam. There are even more questions on Canvas in the slide show with all of these but this was getting really long... lol. 1 point 10% 20% 30% 50% 0.2% 1 point independent assortment 25% recombination 30% recombination 60% recombination Genetics Exam 3 Practice Questions jessicastepp24@gmail.com (not shared) Switch account The genes A B C occur in that order in fruit flies. A is 10 map units from B, and B is 20 map units from C. If you test crossed triply heterozygous A B C/abc how much recombination would you expect between genes A and B? Two genes that are more than 50 map units apart are expected to show _____.

4/10/23, 11:39 PM Genetics Exam 3 Practice Questions https://docs.google.com/forms/d/e/1FAIpQLSdunVf8d4TGegJLCYgWJMXlB_YZXoSqK-UmN9zL8Ap3Ki5ONw/formResponse 2/10 1 point 2n = 126; aneuploid 2n = 126; euploid 2n = 63; aneuploid 2n = 63; euploid either 2n = 64 or 2n = 62, depending on whether the mother was the horse or the donkey; euploid. 1 point Endopolyploidy Allopolyploidy Autopolyploidy Trisomy 1 point two alleles are codominant there are at least three alleles there is simple dominance between two alleles there is a lethal allele A horse is 2 n = 64 and a donkey is 2 n = 62. If crossed, they produce the hybrid mule. There are _______chromosomes in a mule somatic cell. This cell is _________. Based on the description in the previous question, a mule is an example of A cross between two heterozygous short-tailed mice results in offspring in the ratio of 67 short-tailed and 34 long-tailed. The best explanation for this result is _____.

4/10/23, 11:39 PM Genetics Exam 3 Practice Questions https://docs.google.com/forms/d/e/1FAIpQLSdunVf8d4TGegJLCYgWJMXlB_YZXoSqK-UmN9zL8Ap3Ki5ONw/formResponse 3/10 1 point The allele is recessive. The development of the heart defect is determined by more than one locus. The allele has pleiotropic effects on development. The allele is codominant. 1 point Complete dominance. Incomplete dominance. Variation in expressivity. A lethal allele with haplosufficiency. Epistasis 1 point 10 15 25 30 In one strain of mouse, homozygotes for an allele of a gene develop heart defects. In a different strain of mouse, homozygotes for the same allele develop normally. Heterozygotes develop normally in both strains. What is the most likely explanation for the differences between the two strains. Two mice with medium tails were mated and produced the following offspring: 24 long tailed mice, 50 medium tailed mice, and 27 short tailed mice. These observations can BEST be explained by There are five alleles for a gene in a population of diploids. How many genotypes are possible in the population?

4/10/23, 11:39 PM Genetics Exam 3 Practice Questions https://docs.google.com/forms/d/e/1FAIpQLSdunVf8d4TGegJLCYgWJMXlB_YZXoSqK-UmN9zL8Ap3Ki5ONw/formResponse 4/10 1 point White Brown Light brown Depends on the animal’s genotype Depends on the animal’s nutrition 1 point type O only types A or O types B or O types A, B, or O any blood type Fur color in Himalayan rabbits is controlled by a temperature-sensitive allele. The encoded protein does not produce brown pigment at high temperatures. If one hot summer, you shaved a small patch from your Himalayan rabbit’s brown paw, and then let it grow back while the rabbit played outdoors, what color would the fur grow back? Human blood-type is controlled by A, B, and O alleles. A and B are codominant with each other and completely dominant to O. If a mother has type A blood and her son has type O blood, what are the possible blood types of her son’s father?

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