1. Genetics SC.912.L.16.1

2. In human eye color, B represents the dominant brown eye gene and b represents the recessive blue eye gene. If two parents have the genotypes Bb and BB, what is the likelihood that a child from these parents would have blue eyes (genotype bb)? A. 0 percent B. 50 percent C. 75 percent D. 100 percent A. 0 percent.

3. Mendel's law of segregation describes how alleles of a gene behave during meiosis. Which of the following statements best reflects this law? A. Both alleles for a gene are present within each sex cell. B. Each sex cell has all the alleles for every gene. C. Each sex cell only has one allele for each gene. D. Some sex cells carry alleles for a particular gene, while other sex cells have no alleles for that gene. C. Each sex cell only has one allele for each gene.

4. Two parents are about to have a child. Both the mother and father have brown hair and are heterozygous for brown hair color; their genotypes are both Bb, where B represents the dominant brown hair allele and b represents the recessive blond hair allele. What are the possible genotypes for their child's hair color? A. BB, Bb, bb B. BB only C. Bb only D. Bb and bb only A. BB, Bb, bb

5. A couple is about to have a child. Both parents have blue eyes, which is a recessive trait, and both parents are tall, which is a dominant trait. Because the parents have the same genotypes, they think their child will also have blue eyes and be tall. Which statement explains why this is a false assumption? A. Their children will have blue eyes, but they will be short instead of tall. B. Dominant and recessive traits alternate from one generation to the next. C. Dominant alleles are always passed on to the next generation, so their children will not have any recessive traits. D. Traits are not linked to each other, so the alleles for the eye color and height traits will be passed on separately. D. Traits are not linked to each other, so the alleles for the eye color and height traits will be passed on separately.

6. Humans have three alleles that code for blood type. The three types are A, B, and O. A and B are dominant; O is recessive. If Jenny's father has blood genotype AA, and her mother's blood genotype is OO, what blood genotype would Jenny have? A. AA B. AO C. AB D. OO B. AO

7. Humans have three alleles that code for blood type. The three types are A, B, and O. A and B are dominant; O is recessive. Tammy's blood genotype is AO. When she grows up, she marries a man with a blood genotype of AB. Which of the following is NOT an option for their children's blood phenotypes? A. A B. AB C. B D. O D. O

8. Hemophilia is a sex-linked, recessive trait. Which of the following describes the probability of hemophilia in the offspring of a man who does not have hemophilia and a woman whose father is a hemophiliac? A. Each of their son’s will have hemophilia B. None of their daughters will have hemophilia C. Their sons have a 25% chance of having hemophilia D. There is a 50% chance that their daughters will have hemophilia. B. None of their daughters will have hemophilia

9. When Gregor Mendel crossed a pure (homozygous) tall plant with a pure (homozygous) short plant, the F 1 plants inherited a. an allele for shortness from the tall parent and an allele for tallness from the short parent. b. an allele for tallness from each parent. c. an allele for shortness from each parent. d. an allele for tallness from the tall parent and an allele for shortness from the short parent. d.an allele for tallness from the tall parent and an allele for shortness from the short parent.

10. Out of 8 Questions.. 1/8 = 13% 2/8 = 25% 3/8 = 38% 4/8 = 50% 4/8 = 50% 5/8 = 63% 5/8 = 63% 6/8 = 75% 7/8 = 88% 8/8 = 100%