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| 1 | |
Biological traits are controlled by individual factors, rather than by a single hereditary agent. This idea is referred to as |
| | A) | transcription. |
| | B) | particulate inheritance |
| | C) | blending of traits. |
| | D) | replication. |
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| 2 | |
The genetic code is a set of instructions for the production or synthesis of |
| | A) | proteins. |
| | B) | amino acids. |
| | C) | chromosomes. |
| | D) | deoxyribonucleic acid. |
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| 3 | |
The portion of the genome that codes for a protein is called a(n) |
| | A) | protein |
| | B) | gene |
| | C) | enzyme |
| | D) | nucleus |
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| 4 | |
____________ are responsible for a cell's chemical reactions. |
| | A) | Enzymes |
| | B) | Nucleotides |
| | C) | Genes |
| | D) | Alleles |
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| 5 | |
What are the correct pairings of the four bases found in DNA? |
| | A) | T-C, C-T, A-G, G-A |
| | B) | A-C, C-A, T-G, G-T |
| | C) | A-T, T-A, C-G, G-C |
| | D) | T-A, C-A, C-T, C-G |
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| 6 | |
Most traits of complex organisms are |
| | A) | polygenic. |
| | B) | homozygous. |
| | C) | monogenic. |
| | D) | heterozygous. |
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| 7 | |
The AB blood type is produced by |
| | A) | a homozygous genotype. |
| | B) | one dominant and one recessive allele. |
| | C) | two codominant alleles. |
| | D) | two recessive alleles. |
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| 8 | |
Mitosis is |
| | A) | the process of cell division that results in two copies of the original cell. |
| | B) | the process of cell division in which gametes are produced. |
| | C) | the breaking up of allele pairs in the production of gametes. |
| | D) | the genetic change that results from crossing over. |
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| 9 | |
"Junk DNA" it thought to |
| | A) | have no function within the genome. |
| | B) | regulate gene function and activity level. |
| | C) | code for proteins that function in the cell. |
| | D) | be unique to every individual. |
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| 10 | |
How many chromosomes in total do human's have? |
| | A) | 48 total or 24 pairs |
| | B) | 46 total or 23 pairs |
| | C) | 40 total or 20 pairs |
| | D) | 78 total or 39 pairs |
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| 11 | |
The formation of gametes is called |
| | A) | segregation |
| | B) | mitosis |
| | C) | meiosis |
| | D) | replication |
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| 12 | |
The human genome is approximately how many base pairs long? |
| | A) | 46 |
| | B) | 25,000 |
| | C) | 3.1 billion |
| | D) | 64 billion |
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