Genetics MCQ

1. The transfer of information from the nucleus to organelles is accomplished by _____.

Answer

Correct Answer: RNA

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2. The term peptidyl transferase relates to ________.

Answer

Correct Answer: Peptide bond formation during protein synthesis

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3. The structures called snrnps are __________.

Answer

Correct Answer: Part of a spliceosome

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4. The statement "dna rna proteins" ________.

Answer

Correct Answer: Is known as central dogma

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5. The spindle apparatus disintegrates during _____.

Answer

Correct Answer: Telophase

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6. The seeds collected from the first generation monohybrids are called _____.

Answer

Correct Answer: F1

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7. The rna that is translated into a polypeptide is ______ rna.

Answer

Correct Answer: Messenger

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8. The rna segments spliced to one another during rna processing are _____.

Answer

Correct Answer: Exons

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9. The reduction division of meiosis specifically occurs at ________.

Answer

Correct Answer: Anaphase 2

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10. The process of messenger rna being made from a template of dna is known as _____.

Answer

Correct Answer: Transcription

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11. The principle of _____ suggests that a plant with the genotype tt will display a tall phenotype.

Answer

Correct Answer: Dominance

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12. The polarity of a dna strand refers to the fact that ______.

Answer

Correct Answer: The two ends of the strand have different chemical groups

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13. The kinetochores are __________.

Answer

Correct Answer: Sites at which microtubules attach to chromosomes

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14. The karyotype above shows ________.

Answer

Correct Answer: Trisomy 21, a cause of downsyndrome

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15. The joining of nuclei and chromosomes is known as __________.

Answer

Correct Answer: Fertilization

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16. The human genome contains about ______ on ______.

Answer

Correct Answer: 20,000 genes; 46 chromosomes

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17. The genetic determination of blood type is based on __________ inheritance.

Answer

Correct Answer: Multiple-allele

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18. The genetic code is said to be triplet, meaning that there ________.

Answer

Correct Answer: Are three bases in mRNA that code for an amino acid

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19. The first homo sapiens were known as _______.

Answer

Correct Answer: 'Cro-Magnon Man'

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20. The first genetic material on earth was probably _____.

Answer

Correct Answer: Self-replicating RNA molecules

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21. The field of epigenetics deals with how ____.

Answer

Correct Answer: Experiences can turn genes on or off

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22. The f1 generation differed from the f2 in mendel's experiments in that __________.

Answer

Correct Answer: All of the F1 showed the dominant phenotype, but only three-fourths of the F2 did

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23. The dna sequence that acts as a switch for turning the lac operon off or on is the __________.

Answer

Correct Answer: Operator

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24. The dna double helix is ______.

Answer

Correct Answer: Made up of two polynucleotide strands

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25. The cross-fertilization of two different, but true-breeding, varieties of pea plants will _____.

Answer

Correct Answer: Hybrid plants

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26. The cross-fertilization of two different varieties of pea plants will produce a(n) _____.

Answer

Correct Answer: Hybrid plants

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27. The correct form for writing binomial nomenclature is _____.

Answer

Correct Answer: Genus species

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28. The codon is found on ________, and the anticodon is found on ________.

Answer

Correct Answer: Messenger RNA (mRNA), transfer RNA (tRNA)

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29. The characteristic that results from a monohybrid cross is the _____ trait.

Answer

Correct Answer: Dominant

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30. The _______ chromosomes in a human cell from inside the cheek are found in the _______.

Answer

Correct Answer: 46; nucleus

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31. The _____ separate in meiosis i; the _____ separate in meiosis ii.

Answer

Correct Answer: Homologous chromosomes ... sister chromatids

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