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 Genetics: Multiple Choice [print-friendly version]
1. Genetics is the study of:
| a.heredity |
b. cell division |
c. evolution |
d. reproduction |
2. Chromosomes are found:
| a. in the nucleus |
b. on genes |
c. in gametes only |
3. The sex of an offspring is determined by the:
| a. male |
b. female |
c. offspring |
4. An example of a characteristic
that is not inherited is:
| a. hair color |
b. eye color |
c. muscular development |
5. The man who was known as the "Father ofGenetics" was:
| a. Darwin |
b. Mendel |
c. Linnaeus |
6. When the pair of alleles for a particular characteristic
are identical, the organism is said to be:
| a. heterozygous |
b. homozygous |
c. incompletely dominance |
7. A trait that is frequently observed in a population
is likely to be:
| a. dominant |
b. recessive |
c. passive |
8. A table that is used to predict the genetic
make-up of an offspring is called a:
| a. gene diagram |
b. test cross |
c. Punnett square |
9. The physical appearance of an organism is called
its:
| a. beauty |
b. genotype |
c. phenotype |
10. Chromosomes
| a. contain many genes |
b. are located in the nucleus |
c. are composed of DNA |
d. all of the above |
11. A blue-eyed child has two brown-eyed parents. The genotypes of the
child and the parents are respectively:
| a. bb, Bb and Bb |
b. BB, Bb and Bb |
c. Bb, BB and BB |
d. insufficient information |
12. Different forms of a gene are called:
| a. heterozygous |
b. homozygous |
c. alleles |
d. genotypes |
13. A carrier of a rare trait has a gene which is:
| a. recessive |
b. dominant |
c. pure |
14. Chances for the appearance of rare hereditary traits are greatest
in marriages between:
| a. unrelated people |
b. distant relatives |
c. close relatives |
15. If there is incomplete dominance, you will
get _____________colored flowers when you cross a pure-breeding red flowering plant with a pure-breeding white
flowering plant:
16. Normal human body cells contain:
| a. 38 chromosomes |
b. 23 chromosomes |
c. 46 chromosomes |
d. 78 chromosomes |
17. Human gametes contain:
| a. 38 chromosomes |
b. 23 chromosomes |
c. 46 chromosomes |
d. 78 chromosomes |
18. In an average class, there are more___________ traits:
| a.dominant |
b. recessive |
c. hybrid |
19. Two capital letters, for example TT, indicate:
| a. homosygous recessive |
b. homozygous dominant |
c. a heterozygous genotype |
20. The genetic make-up of an organism is called its:
| a. phenotype |
b. appearance |
c. genotype |
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