Mitosis: Chromosomes and Sister Chromatids

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Questions and Answers

What is the name of the system that provides standard units of length in biology?

  • Biological Units System
  • Length Conversion System
  • Metric System
  • International System of Units (SI) (correct)

Who contributed to the discovery of the structure of DNA, but is often overlooked in the credit?

  • Rosalind Franklin (correct)
  • James Watson
  • Francis Crick
  • Urry L

What is the term used to describe the complete set of genetic material in an organism?

  • Genome (correct)
  • Gene
  • Chromosome
  • Nucleus

What is the function of chromosomes in genetic inheritance?

<p>To store genetic information (C)</p> Signup and view all the answers

What is the name of the molecule that carries genetic information from one generation to the next?

<p>DNA (C)</p> Signup and view all the answers

What is the primary function of histone proteins in chromatin packaging?

<p>To compact DNA into nucleosomes, forming a 'beads on a string' structure (B)</p> Signup and view all the answers

What is the term for a multinucleated cell generated from multiple nuclear divisions without cytokinesis?

<p>Coenocyte (A)</p> Signup and view all the answers

During which phase of the cell cycle is the cellular genome replicated?

<p>S phase (C)</p> Signup and view all the answers

During mitosis, what is the result of cytokinesis in relation to the cytoplasm?

<p>The cytoplasm is divided equally between the two daughter cells (C)</p> Signup and view all the answers

What is the term for the process by which the replicated DNA is divided equally and correctly between the newly formed daughter nuclei?

<p>Mitotic nuclear division (C)</p> Signup and view all the answers

What is the term for the process of DNA duplication and chromosome condensation?

<p>Chromosome duplication (B)</p> Signup and view all the answers

What is the term for the state of a cell that is not dividing?

<p>G0 phase (A)</p> Signup and view all the answers

What is the primary consequence of errors occurring during DNA replication?

<p>Mutations in the daughter cells (D)</p> Signup and view all the answers

What is the term for the duplication of genomic DNA before mitosis can take place?

<p>Replication (A)</p> Signup and view all the answers

What is the term for the structure formed by the coiling of DNA around histone proteins?

<p>Nucleosome (A)</p> Signup and view all the answers

Who deciphered the genetic code by translating information encoded within nucleic acids into amino acid sequences that comprise protein molecules?

<p>Marshall Nirenberg (C)</p> Signup and view all the answers

What was the significance of the work done by Paul Berg, Herbert Boyer, and Stanley Cohen in 1973?

<p>They performed the first genetic engineering experiments. (C)</p> Signup and view all the answers

What is the approximate size of the human genome in terms of base pairs?

<p>3.1 Gb (A)</p> Signup and view all the answers

What is the name of the genome editing technology developed by Jennifer Doudna and Emmanuelle Charpentier in 2012?

<p>CRISPR-Cas9 (D)</p> Signup and view all the answers

What is the term used to describe the process of transcribing genetic information from DNA into messenger RNA?

<p>Transcription (A)</p> Signup and view all the answers

What is the organization of DNA in the nucleus of a eukaryotic cell?

<p>A single double-stranded DNA molecule is tightly coiled around spaced nucleosomes. (B)</p> Signup and view all the answers

What is the result of DNA replication prior to cell division?

<p>Each chromosome consists of two duplicate chromosome arms. (C)</p> Signup and view all the answers

What is the structure formed by the coiling of DNA around histone proteins?

<p>Nucleosome (B)</p> Signup and view all the answers

What is the number of chromosomes in somatic cells and gametes?

<p>Somatic cells have a diploid number and gametes have a haploid number. (B)</p> Signup and view all the answers

What is the term for the relaxed state of DNA in the nucleus when cells are not actively dividing?

<p>Open chromatin (A)</p> Signup and view all the answers

What is the primary mechanism by which genetic diversity is generated during meiosis?

<p>Independent assortment of chromosomes into gametes (D)</p> Signup and view all the answers

What process during meiosis leads to the exchange of genetic information between non-sister chromatids?

<p>Crossing-over (D)</p> Signup and view all the answers

During which stage of meiosis do chromosomes arrange themselves, determining which chromosomes are packaged in gametes?

<p>Metaphase I (D)</p> Signup and view all the answers

What is NOT a process that generates genetic diversity during meiosis?

<p>DNA replication (C)</p> Signup and view all the answers

What is the term for the exchange of genetic information between non-sister chromatids during meiosis?

<p>Crossing-over (B)</p> Signup and view all the answers

What is the term used to describe a pair of homologous chromosomes, consisting of one maternal and one paternal chromatid?

<p>Nonsister chromatids (A)</p> Signup and view all the answers

During which stage of meiosis do homologous chromosomes separate into 2 daughter cells?

<p>Meiosis I (D)</p> Signup and view all the answers

What is the result of the replication of genome during Meiosis I?

<p>Tetrad formation (B)</p> Signup and view all the answers

What is the number of individual phases in Meiosis I?

<p>4 (A)</p> Signup and view all the answers

What is the final stage of Meiosis I that is followed by cytokinesis?

<p>Telophase I (B)</p> Signup and view all the answers

What is the stage of meiosis where sister chromatids separate?

<p>Anaphase II (D)</p> Signup and view all the answers

What is the term used to describe the process of meiosis in vertebrates, including mammals?

<p>Meiosis in vertebrates (D)</p> Signup and view all the answers

What is the result of Meiosis II?

<p>Formation of haploid daughter cells (C)</p> Signup and view all the answers

How many stages are there in Meiosis?

<p>8 (C)</p> Signup and view all the answers

What is the stage of Meiosis I where chromatin condenses?

<p>Prophase I (C)</p> Signup and view all the answers

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