Mendel and Genetics (T)

• Who is known for the foundational work in genetics?

  Gregor Mendel
• What should you be able to describe by the end of the video?

  You should be able to describe how Mendel's work led to the understanding of genetics.
• Why was the importance of Mendel's discovery not recognized until after his death?

  Because many scientists believed in blending inheritance, which contradicted Mendel's findings.
• What are genes and alleles?

  • Genes: Sections of DNA on a chromosome that determine the amino acid sequence of a specific protein.
  • Alleles: Different versions of a gene.
• What did Mendel's experiments on pea plants reveal about inheritance?

  Characteristics are not blended during inheritance; they are determined by inherited units.
• What did Mendel conclude about the relationship between different characteristics?

  The shape of a pea pod has no effect on the color of the flowers.
• What term do we now use to refer to the inherited units Mendel discovered?

  Genes
• What phenomenon did Mendel observe regarding some characteristics in later generations?

  Some characteristics could be masked and then reappear in later generations.
• What was the scientific community's initial reaction to Mendel's published research?

  Many scientists did not recognize the significance of Mendel's work.
• What led to the rediscovery of Mendel's work in the late 1800s?

  • Scientists studied how chromosomes behaved during cell division.
  • Mendel's work was revisited and recognized for its significance.
• How did scientists in the early 1900s relate Mendel's units to chromosomes?

  They realized Mendel's units behaved like chromosomes and that genes are located on chromosomes.
• What significant discovery about DNA was made in the mid-1900s?

  Scientists determined the structure of DNA and how genes function.
• What should students expect regarding Mendelian genetics in their workbook?

  • Plenty of questions on Mendelian genetics.