Biology Genetics Practice Quiz Multiple Choice Identify the choice that best completes the statement or answers the question. 1. The table above shows information related to blood types. What genotype(s) would produce an individual with blood type B? a. I B i d. I A i b. I A i e. I B I B c. I A I B f. both a and e 2. Which type of inheritance pattern is shown above? a. sex linkage d. co-dominance b. polygenic inheritance e. simple dominance & recessive inheritance c. incomplete dominance 3. In horses, gray horses (GG) are codominant to white horses (WW). The heterozygous horses (GW) is an appaloosa horse (a white horse with gray spots on the rump and loins). Cross a white horse with an appaloosa horse. What is the probability of producing a grey horse? a. 1/4 d. 4/4 b. 1/2 e. 0 c. 3/4 4. The outward appearance (gene expression) of a trait in an organism is referred to as: a. Phenotype d. Dominant allele b. Recessive gene e. Genotype c. Heterozygous
5. Refer to the diagram above. What blood type(s) would be possible form a cross between an individuals with the following genotypes--> I A i x I B i a. type A and B d. type O, AB, B b. type B and O e. type A, B, AB, O c. type A, B and AB 6. Examine the illustration above. Which blood type has no surface antigens, but has anti-a and Anti-B antibodies? a. type O d. A b. type AB e. type B and type A c. type B 7. What type of inheritance pattern is shown above? a. simple dominant/recessive d. multiple alleles b. co-dominant e. inheritance of two genes together (like eye color and hair color) c. sex-linked
Examine the diagram above and answer the questions below. 8. How many different genes are shown in the example above? a. 1 d. 4 b. 2 e. 16 c. 3 9. How many different alleles are illustrated in the pea example above? a. 2 d. 16 b. 4 e. 32 c. 8 10. How many phenotypes are produced in a Punett square in the pea example above? a. 1 d. 4 b. 2 e. 16 c. 3 11. In the example above, what genotype(s) will produce a round, yellow pea? a. RrYy d. RrYy b. Rryy e. Answers a & d c. rryy f. none of the answers
12. What kind of information can be derived from the diagram (karyotype) pictured above? a. the presence of extra or missing d. chromosome mutations such as deletions, chromosomes insertions, translocations b. the sex of the individual e. all the answers c. homologous chromosome pairs 13. In cactus plants yellow flowers are dominant to pink flowers. If a true breeding pink flowered cactus is bred with a heterozygous cactus, what is the probability of producing a pink flowered offspring? a. 25% d. 100% b. 50% e. 75% c. 0% 14. The diagram above is an example of what type of inheritance? a. Co-dominance d. Polygenic b. Incomplete dominance e. All the answers c. Multiple alleles 15. What is the best definition of the word allele? a. An allele is always the dominant trait d. An allele is passed on by the X chromosome b. An allele is made of multiple genes e. An allele is always a beneficial trait c. An allele represents many variations of a
basic gene type 16. In a certain plant, blue flowers (B) are dominant to red flowers. If the cross of two blueflowered plants produces some blue-flowered and some red-flowered plants, what is the genotype of the parent plants? a. BB x bb d. Bb x Bb b. BB x BB e. bb x bb c. BB x Bb 17. In the homologous chromosomes shown in the diagram, which is a possible allelic pair? a. cd d. Aa b. Bb e. cd c. AB 18. In snails, big eyes are dominant to small eyes. The parent (P) generation consists of a homozygous big eyed and a small eyed snail. What would the probability of a small eyed snail in the F 2 generation. (Hint breed the F1 generation first). a. 0% d. 75% b. 25% e. 100% c. 50% 19. The diagram above best illustrates which of Mendel s Laws? a. The law of dominance d. The law of segregation b. The law of recessiveness e. The law of generations
c. The law of genetics 20. What kind of information can you get from a pedigree such as the one above? a. Which individuals are parents or offspring d. How many generations there are b. The sex of the idividuals e. all the answers are correct c. How traits are passed from one generation to the next 21. If the pedigree shown above represents a recessive pedigree where individuals that are dark circles or squares show the recessive trait and are (rr), what is the genotype of the father in the 1st generation (I-1)? a. rr d. RR b. X r Y e. all the answers are correct c. Rr