Genetics - Form IX DNA From the Beginning - Modules 6-14
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DNA From the Beginning. To do this you should open "DNA" in a new window.
Answer the questions as best you can. The boxes will expand as you type if you need more space.
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Read Module 6-Genetic Inheritance Follows Rules in "Classical Genetics" at
DNA From the Beginning
Question 1: For each scientist
listed in this section list what were his major accomplishments.
Read Module 7-All cells arise from pre-existing cells
Question 2: Who said "omnis cellula e cellula" and when did he say it?
Read Module 8-Sex Cells have one set of chromosomes; body cells have two
In what phase of meiosis do you reduce the number of chromosomes?
Question 4: Why do you need two cell divisions in meiosis?
Read module 9 Specialized chromosomes determine gender
Question 5: If you were to centrifuge (separate by density) a mixture of
sperm and eggs why would they separate into layers with the eggs on top,
followed by a layer of sperm that would produce sons and then on the bottom a
layer of sperm that would produce daughters.
Remember, the boxes will expand as you type if you need more space.
Read module 10- Chromosomes carry genes & module 11 Genes get shuffled when
chromosomes exchange pieces.
Question 6: Who first worked on fruit flies and who published the first
Read module 12 Evolution begins with the inheritance of gene variations.
Question 7: Define hybrid vigor.
Read module 13 Mendelian laws apply to human beings
Question 8: What is brachydactyly?
How did Alexis Romanov die?
Read module 14 - Mendelian genetics cannot fully explain human health and
Question 9: Do you think that "love of the sea" is a genetically determined
trait? What kind of behaviors do you think are genetically determined? What kind
of behaviors do you think are NOT genetically determined?