Podcast
Questions and Answers
What is the main purpose of cytokinesis?
What is the main purpose of cytokinesis?
Which part can be added to a microscope slide to make plant cells more visible?
Which part can be added to a microscope slide to make plant cells more visible?
What is the total magnification of the microscope with lenses of ×10 and ×40?
What is the total magnification of the microscope with lenses of ×10 and ×40?
Which part of a light microscope can be moved to obtain a clear image of plant cells?
Which part of a light microscope can be moved to obtain a clear image of plant cells?
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In a Punnett square for two heterozygous parents, what percentage probability do their children have of having sickle cell disease?
In a Punnett square for two heterozygous parents, what percentage probability do their children have of having sickle cell disease?
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Why will none of the children of a father with genotype dd and a mother with genotype DD have sickle cell disease?
Why will none of the children of a father with genotype dd and a mother with genotype DD have sickle cell disease?
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Study Notes
Cell Cycle
- Interphase: DNA is copied
- Cytokinesis: the cell divides into two, with two nuclei being formed and a spindle being formed, and the nuclear membrane breaks down
Microscopy
- To make plant cells more visible on a microscope slide, a stain can be added
- The total magnification of a microscope with a 10x eyepiece lens and a 40x objective lens is 400x
- The microscope part that can be moved to obtain a clear image of plant cells is the stage
Inheritance Patterns
- Sickle cell disease is a recessive genetic disorder in humans
- A person with the genotype dd will have sickle cell disease, while a person with the genotype DD or Dd will not
- If two parents are heterozygous for sickle cell disease (Dd), the probability that their children will have sickle cell disease is 25%
- If a father has the genotype dd and a mother has the genotype DD, none of their children will have sickle cell disease because they will all inherit a dominant D allele from their mother
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Description
Test your knowledge on the stages of the cell cycle, including interphase and cytokinesis. Also, understand what can be added to a microscope slide to make plant cells more visible.
