Part 2 of Final material Flashcards
Law of Segregation
of the four daughter cells in meiosis two get copies of one allele and the other two get copies of the other allele
Law of Independent Assortment
says that the segregation of the first pair of alleles will be independent of the segregation of the second pair
Why are drosophila useful
they grow quickly, produce many offspring and are easy to maintain and their genome is very similar to ours
differences between female and male fruit flys
females have pointy anal plates and males have sex combs
allium cepa
onion
plasmolysis`
the cytoplasmic region of the cell should shrink and pull away from cell wall.
cytoplasmic streaming
circulation of cytoplasm caused buy shortening and lengthening of submicroscopic micropjaments of actin
phagocytosis
the process of ingestion of particles by cells
what did we stain yeast with
phosphate buffered methylene blue because they are too big to move through the plasma membrane and thus only stain when the cells are dead
what did we stain cheek cells with
ethanol methylene blue because it can move through the plasma membrane and dye the nucleus so we can see it
chi squared test
a statistical device for evaluating if a data set fits a model or hypothesis
you test the __ in a chi squared test
the null hypothesis
degrees of freedom
the number of data classes minus one
chi squared calculation
the sum of the (observed value-expected value)^2/ expected value
the p value
indicates the likelihood that the difference between observed and expected values can be attributed to the inherent or random variability of biological systems and events.
