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| 1. |
What is a model organism?
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| 2. |
If an individual is heterozygous for hair color (Hh) and eye color (Ee), which of the following statements is true?
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| 3. |
An organism’s phenotype is
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| 4. |
Refer to Figure 10.3 on page 197 of your textbook. Assume that the plants shown in the figure are pure-breeding. Which of the following statements is true?
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| 5. |
Which of the following is true, based on this figure? 
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| 6. |
Which of the following is due to the "principle of segregation"?
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| 7. |
What is the frequency of each phenotype in the F2 generation of this cross?
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| 8. |
If the first five seeds (offspring) grown from this cross are all round, what is the probability that the next offspring will be wrinkled?
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| 9. |
If an F1 plant from this cross were to self-fertilize, what would be the phenotypic ratio of the F2 generation?
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| 10. |
A botanist studying the inheritance of flower color found that when she crossed two pure-breeding flower lines, one purple, one white, she got the following offspring from planting 60 seeds: 17 plants with purple flowers
26 plants with lavender flowers
15 plants with white flowers
This is an example of
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| 11. |
If an organism is heterozygous for two traits that are linked, how many different genotypes are possible in the gametes? Assume that no crossing over occurs.
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| 12. |
If an organism is heterozygous for two traits that are linked, how many genotypes are possible in the gametes produced from a single germ line cell? Assume that no crossing over occurs.
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| 13. |
If an organism is heterozygous for two traits that are linked, how many genotypes are possible in the gametes produced from a single germ line cell if a single crossing over even occurs during meiosis I?
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| 14. |
If we were to add another trait to this cross, and assumed that the parents were also heterozygous for flower color, where purple is dominant and white is recessive, what would be the expected proportion of offspring plants with white flowers, and wrinkled, green peas? 
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| 15. |
What is the phenotypic ratio of the F2 generation? 
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| 16. |
Which of the following pairs of genes would demonstrate the highest incidence of crossing over? 
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| 17. |
Freckles are a dominant trait in humans. To determine the genotype of a man with freckles (F_), the best person to mate him with would be
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| 18. |
If an individual with type O blood mates with an individual with type AB blood, what are the possible blood types of their offspring? TABLE 10.1
The ABO Blood Types in Humans, the four different ABO blood types are produced by the alleles present at a single locus. Three alleles are common in most populations: i, IA, and IB. |
| Phenotype (blood type) | Genotype | | O
A
B
AB | ii
IAIA or IAi
IBIB or IBi
IAIB |
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| 19. |
Pepper color is a trait that exhibits epistasis. If a pepper plant that has red peppers is heterozygous for pepper color (Rr), which of the following represents the phenotypic ratio of the offspring?
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| 20. |
A female housefly with red eyes mated with a male housefly with white eyes. Their offspring were: 90 females with white eyes
43 males with red eyes
47 males with white eyes Based on this information, which of the following statements is most correct?
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Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.
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