Chapter 3, Part 1 Quiz - Weebly

Name Chapter 8 Extra Calculations Part 1 Each question is worth 2 points: 1 point for showing calculation and 1 point for correct answer. An answer without units will be counted wrong! 1. A purebred, long-whiskered seal is bred with a hybrid long-whiskered seal. If the allele for long-whiskers is dominant, what possible genotypes and phenotypes will be produced?

2. If one parent seal is pure long-whiskered and the other is short-whiskered, what percentage of offspring will have short whiskers?

3. A purple-flowered pea plant is crossed with a white-flowered pea plant. The cross produces 100% purple-flowered pea plants. What are the genotypes of each parent and each offspring?

4. Mendel found that crossing wrinkle-seeded plants with pure round-seeded plants produced only round-seeded plants. What possible genotypes and phenotypes will be produced from a cross of a wrinkle-seeded plant and a plant hybrid for this trait?

5. Black fur in guinea pigs is dominant over white fur. Find the probability of a white offspring in across between two hybrid guinea pigs?

6. In humans, brown eyes (B) are dominant over blue (b). A brown-eyed man marries a blue-eyed woman and they have three children, two of whom are brown-eyed and one of whom is blue-eyed. Draw the Punnett square that illustrates this marriage. What is the man's genotype? What are the genotypes of the children?

Use the below pedigree chart to answer the following questions about dimples. The dimple gene controls whether a person has dimples or doesn't have dimples. Having dimples is dominant to no dimples. Place the genotypes of each individual below its symbol.

7. How many family members have dimples? 8. What is the genotype of individuals #3 and #4? 9. Can either individual #8 or #9 be purebred? 10. Explain the family relationship that #12 has with #2.

Use the below pedigree chart to answer the following three questions about unibrows. A person can either have two eyebrows or one fused eyebrow called a unibrow. The eyebrow gene codes for which type of eyebrows a person will have. NOTE: this is a Recessive Trait ? which means for a person to be affected they must have two recessive alleles. Place the genotypes of each individual below its symbol.

11. How many family members have unibrows? 12. What is the genotype of individual #4? 13. Are individuals #8 and #9 purebred or hybrid? 14. What is the genotype of individual #2?

The trait represented by the colored circles and squares below is inherited as a dominant allele. This is not a sex-linked trait. Shaded individuals show the dominant trait. What is the probable genotype of each individual?

15. Are there any purebred dominant individuals in the pedigree above? How do you know?

16. What is the probability of the trait appearing in offspring if 7 should marry 9? 17. What is the probability of the trait appearing in offspring if 8 should marry 10?

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