C-SCIE1101 Module 6 Assessment
Time limit: 60 minutes
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Question 1 of 25
1. Question
1 point(s)Which of the following is NOT a reason why the garden pea plant was an excellent choice of model system for studying inheritance?
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Question 2 of 25
2. Question
1 point(s)You and a friend simultaneously roll a six-sided die and flip a two-sided coin. What is the probability that the die lands on 4 AND the coin lands on heads?
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Question 3 of 25
3. Question
1 point(s)A TV remote control has keys for channels 1 through 9. If you select one key at random, what is the probability your number will be even OR 9?CorrectIncorrect -
Question 4 of 25
4. Question
1 point(s)Imagine you are performing a cross involving garden pea plants. What offspring (f1 generation) would you expect if you crossed a true-breeding plant with yellow seeds with a true-breeding plant with green seeds? Yellow seed color is dominant over green.CorrectIncorrect -
Question 5 of 25
5. Question
1 point(s)Consider a cross to investigate the pea pod texture trait, involving constricted or inflated pods. Mendel found that the traits behave according to a dominant/recessive pattern in which inflated pods are dominant. If you performed this cross and obtained 650 inflated-pod plants in the f2 generation bred from true-breading stock, approximately how many constricted-pod plants would you expect to have in the f2 generation?CorrectIncorrect -
Question 6 of 25
6. Question
1 point(s)In the mouse coat color phenotype, gray (G) is dominant over white (g). A true-breeding gray mouse is crossed with a true-breeding white mouse. What is the genotype of the F1 offspring resulting from the cross?CorrectIncorrect -
Question 7 of 25
7. Question
1 point(s)A cross between two true-breeding parents with different traits that results in an f1 generation with 100% the same trait suggests:
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Question 8 of 25
8. Question
1 point(s)A recessive trait will be observed in individuals that are ______ for that trait?
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Question 9 of 25
9. Question
1 point(s)Petunias can be blue, red, or violet. When a blue flower is crossed with a red flower, all the resulting flowers are violet. When a violet flower is crossed with another violet flower, what are the expected ratios of colors?CorrectIncorrect -
Question 10 of 25
10. Question
1 point(s)The color blindness gene is recessive and X linked. It is written as Xb. A woman who is color blind has a son with a man with normal vision. What is the genotype of the son?CorrectIncorrect -
Question 11 of 25
11. Question
1 point(s)A plant has flowers that are either red or white. A cross is made between a true breeding plant with red flowers and a true breeding plant with white flowers. If the two traits show incomplete dominance, the offspring will most likely have _____ flowers. If the two traits show codominance, the offspring will most likely have ______ flowers.
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Question 12 of 25
12. Question
1 point(s)One of the traits that Mendel examined in pea plants was flower position. Flower position in pea plants is determined by a gene with axial and terminal alleles. Given that axial is dominant to terminal, predict all of the possible F1 and F2 genotypes and phenotypes from a cross involving parents that are homozygous for each trait. Express genotypes with conventional genetic abbreviations.CorrectIncorrect -
Question 13 of 25
13. Question
1 point(s)You have adopted a gray mouse, which you know is a wild type phenotype. When crossed with a white mouse, your gray mouse has a first litter of 3 gray mice and 2 white mice. In the second litter, you observe 3 gray mice and 4 white mice. Assuming no exceptions to Mendel’s laws, what is the genotype of your gray mouse?CorrectIncorrect -
Question 14 of 25
14. Question
1 point(s)The trait for widow’s peak can be considered a monoallelic dominant trait in humans. If a man with a widow’s peak and a woman with a straight hairline have a child together, what is the probability that the child will inherit the widow’s peak if you know that the father’s mother had a straight hairline?CorrectIncorrect -
Question 15 of 25
15. Question
1 point(s)Which cellular process underlies Mendel’s law of independent assortment?CorrectIncorrect -
Question 16 of 25
16. Question
1 point(s)While studying meiosis, you observe that gametes receive one copy of each pair of homologous chromosomes and one copy of the sex chromosomes. This observation is the physical explanation of Mendel’s law ofCorrectIncorrect -
Question 17 of 25
17. Question
1 point(s)In some primroses, the petal color blue is dominant. A cross between a true-breed blue primrose and a white primrose yields progeny with white petals. A second gene at another locus prevented the expression of the dominant coat color. This is an example of:CorrectIncorrect -
Question 18 of 25
18. Question
1 point(s)A cross between a true breeding pea plant with yellow round seeds and a true breeding plant with green wrinkled seeds produces an F2 generation with a phenotypic ratio of 9:3:3:1. Which of the following supports this data?
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Question 19 of 25
19. Question
1 point(s)Purple flowers (P) are dominant over white flowers (p), and long pollen grains are dominant over round pollen grains. When purple flowers and long pollen grain plants were crossed with plants with white flowers and round pollen grains, all the f1 plants showed purple flowers and long pollen grains. The f1 plants were crossed and the results are shown below. What conclusions about the physical relationship between the traits can be drawn from the experiment?
purple/long: 75%
purple/round: 5%
white/long: 5%
white/round: 15%
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Question 20 of 25
20. Question
1 point(s)Cats can be black, yellow, or calico (black and yellow patches). Coat color is carried on the X chromosome. What type of inheritance is color coat in cats? Select all that apply.
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Question 21 of 25
21. Question
1 point(s)X-linked recessive traits in humans (or in Drosophila) are observed__________.CorrectIncorrect -
Question 22 of 25
22. Question
1 point(s)The figure below represents a Drosophila linkage map for genes A-E. The numbers between the gene loci are the relative map units between each gene. Based on the linkage map, predict and identify the two genes that are most likely to be inherited together.
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Question 23 of 25
23. Question
1 point(s)A dihybrid test cross (two traits) was made between true-breeding EEWW flies and eeww flies. The resulting F1 generation was then crossed with eeww flies. 100 offspring in the F2 generation were examined and the E and W genes were determined to be not linked. Differentiate between the correct genotypes of the F2 offspring of the unlinked genes and the predicted genotypes if the genes were instead found to be linked.CorrectIncorrect -
Question 24 of 25
24. Question
1 point(s)Which recombination frequency corresponds to perfect linkage and violates the law of independent assortment?CorrectIncorrect -
Question 25 of 25
25. Question
1 point(s)Which recombination frequency corresponds to independent assortment and the absence of linkage?CorrectIncorrect