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Unit 7: Complex Inheritance Click to begin
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Which of the following genotypes represents Type O blood? A.) I A I A B.) I A i C.) I A I B D.) ii L D.) correct answer F
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A.) autosomesB.) multiple alleles C.) sex chromosomesD.) trisomy LF C.) correct answer The 23rd pair of chromosomes that differ in males and females are called _____.
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A.) XXB.) XY C.) XO D.) XXY LF B.) correct answer Which of the following genotypes represents a normal human male?
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A.) multiple allelicB.) codominant C.) simple dominantD.) polygenic LF Roan cattle have both red and white hairs. This variation demonstrates _____ inheritance. B.) correct answer
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A.) codominantB.) sex-linked C.) polygenicD.) environmental LF Hemophilia is a genetic condition in which the blood does not clot properly. Because it is carried on the X-chromosome, it is considered _____. B.) correct answer
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A.) incomplete dominance B.) multiple alleles C.) simple dominance D.) codominance LF Hair texture in humans may be straight, wavy, or curly. Because wavy is a mixture of straight and curly, this variation demonstrates _____. A.) correct answer
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A.) the offspring’s motherB.) an unknown genotype C.) the offspring’s ageD.) a parent’s phenotype LF A test cross is used to determine _____. B.) correct answer
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A.) sickle-shapedB.) too many C.) normalD.) both A & C LF Individuals heterozygous for Sickle Cell Anemia have _____ red blood cells. D.) correct answer
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A.) lung cancerB.) hemophilia C.) cystic fibrosis D.) sickle cell anemia LF Which of the following conditions is most likely environmental? A.) correct answer
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A.) 100%B.) 50% C.) 25% D.) 0% LF What is the probability of a female fruit fly with white eyes and a male fruit fly with red eyes having red-eyed male offspring? D.) correct answer
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A.) fatherB.) mother C.) both parents D.) neither parent LF Color blindness is a sex-linked trait in humans. A colorblind male received the disorder from which of his parents? B.) correct answer
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A.) Type A bloodB.) Type B blood C.) Type O blood D.) Type AB blood LF It is not possible for a woman heterozygous for Type A blood and a man homozygous for Type B blood to have a baby with which blood type? C.) correct answer
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A.) 0% B.) 25% C.) 50% D.) 100% LF What is the chance that a man and a woman that are both carriers for Sickle-Cell Anemia will have a baby that has the disease? B.) correct answer
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A.) codominantB.) simple dominant C.) multiple allelic D.) polygenic LF There are numerous skin and eye colors in humans. These traits are controlled by _____ inheritance. D.) correct answer
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A.) karyotypingB.) crossing over C.) nondisjunction D.) UV exposure LF Down Syndrome, which is caused by trisomy at the 21 st chromosome pair, is caused by _____. C.) correct answer
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