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How are two homologous chromosomes similar and how are they different? PowerPoint Presentation
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How are two homologous chromosomes similar and how are they different? - PowerPoint PPT Presentation


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How are two homologous chromosomes similar and how are they different? Draw a cell in prophase I of meiosis and describe the events that occur there. Draw a cell in metaphase I and metaphase II of meiosis and differentiate between the two phases.

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How are two homologous chromosomes similar and how are they different?


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slide1

How are two homologous chromosomes similar and how are they different?

  • Draw a cell in prophase I of meiosis and describe the events that occur there.
  • Draw a cell in metaphase I and metaphase II of meiosis and differentiate between the two phases.
  • Draw a cell in anaphase I and anaphase II of meiosis and differentiate between the two phases.
  • What stage of the cell cycle occurs before meiosis?
determine the number of chromatids chromosomes if the diploid number is 50
Determine the number of chromatids/chromosomes if the diploid number is 50
  • Number of chromatids in prophase I
  • Number of chromosomes in phrophase I
  • Number of chromosomes in prophase II
  • Number of chromatids in prophase II
  • Number of chromosomes after meiosis
  • Number of chromatids after meiosis
  • Number of chromosomes in G2
  • Number of chromatids in G2
slide3

How many sex chromosomes does a human with Down syndrome has in each diploid cell? How many autosomes?

  • Define nondisjunction.
  • Differentiate between aneuploidy and polyploidy.
  • Differentiate between translocation and crossing over
  • State Mendel’s principle of independent assortment.
  • Explain how we correct the principle of independent assortment today
slide4

If PTC tasting is dominant over non-tasting, what is the expected genotypic and phenotypic ratio of a cross between a non-taster woman and a man with a non-taster mother.

  • Tall pea plants are dominant over short and round pea shape is dominant over wrinkled. What is the expected genotypic and phenotypic ratio if we cross a homozygous tall, heterozygous round pea with a heterozygous tall and wrinkled pea.
slide5

A man who has blood type B but had a mother who was O blooded marries a woman with O blood. What is the chance of them having a B blooded child? What is the mode of inheritance?

  • When we cross a red flowered organism with a pink flowered organism, what is the expected genotypic and phenotypic ratio of the offspring? What is the mode of inheritance?
slide6

Hemophilia is a recessive X-linked trait. What is the possible phenotypic and genotypic ratio of the offspring if a man who is normal, marries a woman, who is normal but had a father who is hemophiliac?

  • Color blindness is also a recessive X-linked disorder. If a woman with color blindness marries a normal man, what is their chance of having colorblind sons? Daughters?
slide7

http://highered.mcgraw-hill.com/sites/0072485949/student_view0/chapter3/interactive_activity.htmlhttp://highered.mcgraw-hill.com/sites/0072485949/student_view0/chapter3/interactive_activity.html