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| 1 | |
What is the passing of biological information from generation to generation? |
| | A) | human genome |
| | B) | heredity |
| | C) | genes |
| | D) | genetics |
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| 2 | |
What is the structure of DNA? |
| | A) | diploid |
| | B) | coiled chromosomes |
| | C) | a straight ladder |
| | D) | double helix |
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| 3 | |
What are the major chemical units that make up DNA? |
| | A) | nucleotide bases, sugars, and phosphates |
| | B) | nucleic acids, sugars, and phosphates |
| | C) | nucleotide bases, hydrogen bonds, and phosphates |
| | D) | nucleotide acids, sugars, and lipids |
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| 4 | |
What is a diploid? |
| | A) | a cell with the 23 pairs of chromosomes |
| | B) | chromosomes 1 through 22 |
| | C) | a super-coiled mass of DNA found in the nucleus of cells |
| | D) | pairs of the nucleotide bases |
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| 5 | |
Which of the following is NOT considered a primary function of DNA? |
| | A) | replication |
| | B) | protein synthesis |
| | C) | protection |
| | D) | regulation |
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| 6 | |
What is the process of creating two cells from one cell? |
| | A) | mitosis |
| | B) | meiosis |
| | C) | reproduction |
| | D) | recombination |
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| 7 | |
During transcription, messages are transcribed onto which type of molecule? |
| | A) | thymine |
| | B) | uracil |
| | C) | DNA |
| | D) | RNA |
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| 8 | |
What is a segment of DNA that contains the code for a protein? |
| | A) | locus |
| | B) | allele |
| | C) | codon |
| | D) | gene |
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| 9 | |
When Mendel cross-pollinated pure-breeding tall and short pea plants, all of the offspring were tall. This is an example of a(n) ___________ trait. |
| | A) | independent |
| | B) | recessive |
| | C) | homozygous |
| | D) | heterozygous |
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| 10 | |
When two alleles have a dominant-recessive relationship, which of the following statements is NOT true? |
| | A) | The trait is heterozygous. |
| | B) | The dominant allele's genotype exists and the recessive allele's does not. |
| | C) | The dominant allele's phenotype is expressed and the recessive allele's is not. |
| | D) | The two alleles are different. |
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| 11 | |
What is the effect when one gene may have many effects on a number of different traits or systems? |
| | A) | polygenic effect |
| | B) | pleiotropic effect |
| | C) | both polygenic and pleiotropic effects |
| | D) | independent assortment effect |
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| 12 | |
To what might "inactive" DNA be linked? |
| | A) | a reservoir of genetic variation |
| | B) | regulation of other genetic sequences |
| | C) | evolvability |
| | D) | All of these answers are correct. |
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| 13 | |
How do we determine the relationship between genes and behavior? |
| | A) | It depends on how many alleles are involved. |
| | B) | It depends on the location of the gene or locus. |
| | C) | It depends on what the proteins are coded for. |
| | D) | It depends on the answers to many complex questions. |
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| 14 | |
What is a gene pool? |
| | A) | segments of DNA that contain the sequences for proteins |
| | B) | the study of the distribution of genetic variation within and between populations |
| | C) | all of the alleles for each locus in an individual |
| | D) | all of the genetic variation in a population |
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| 15 | |
How can biological evolution be measured? |
| | A) | by mapping alleles to loci |
| | B) | by analyzing the triplets that appear in DNA over time |
| | C) | by calculating the changes in the frequencies of alleles in a population from generation to generation |
| | D) | by correlating variation with specific alleles |
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