Study

DNA Structure/PS/ Meiosis review

  •   0%
  •  0     0     0

  • Cells at the end of meiosis are haploid or diploid
    haploid
  • What are three nucleotides on an mRNA molecule that code for an amino acid called?
    Codon
  • Sperm and egg cells are called
    gametes
  • Chromosomes with the same genes (one from mom and one from dad) are
    Homologous Chromosomes
  • What is the name of the sugar found in DNA?
    Deoxyribose Sugar
  • What is Chargaff’s rule?
    A=T & C=G
  • Where does replication take place?
    Nucleus
  • What are the three nucleotides on a tRNA molecule called?
    anti-codon
  • What molecules is DNA “rewritten” into during transcription?
    mRNA
  • What is the function of DNA?
    store and transmit genetic information and regulate the production proteins
  • What are the three types of RNA?
    mRNA, tRNA, rRNA
  • What is it called when homologous chromosomes exchange pieces of genetic material?
    crossing over
  • How do proteins affect DNA and gene expression?
    Turn genes on and off, wrap and unwrap DNA
  • What starts transcription?
    RNA polymerase bonding to promote
  • What is the name given to the enzyme that unzips DNA?
    Helicase
  • In order for protein synthesis to occur, mRNA must migrate from the nucleus to
    the ribosome
  • Somatic cells have two sets of chromosomes so they are _____
    Diploid
  • Give 2 differences between DNA and RNA
    1. 2 vs 1 strand. 2. Thymine vs Uracil. 3. Location 4. Sugar in each
  • What are the three parts of a nucleotide?
    Sugar, Phosphate, Nitrogen Base
  • How many cell divisions happen in meiosis?
    2