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Describe what kind of changes need to occur in the motor neuron and its target muscle in order for a synapse to form. What kinds of proteins/organelles need to be summoned to the area in each cell?
Describe what would be the specific probable effects on the cell if each of these organelles were lost. Try to avoid picking the same pair as other students in your class.
Draw up a clearly labelled and appropriate 2 x 2 table to show these data. How many times more likely was a smoker to develop lung cancer than a non-smoker?
In Drosophila melanogaster you are studying three phenotypes that you suspect are linked on the same chromosome. THe homozygous recessive traits for each locus are.
When the sperm cell unites with egg cell this is known as ______. Usually, this happens in the ______. After four or five days, the developing zygote arrives the uterus.
The DNA molecule is made up of two strands -- each of which is a sequence of sugar and phosphate molecules linked by covalent bonds. The two chains are held together by much weaker hydrogen bonds between bases on opposite chains.
Draw a biomechanical force diagram for the flexor carpi radialis muscle. Label the fulcrum, bones used as levers, force application point, and the resistance. What kind of lever system does this represent?
What must a biologist do if she or he finds that different methods of analyzing the same data give different estimates of the relationships among certain taxa.
What is a lipase? Explain the difference in the osmium tetroxide and hematoxylin preparation treated slides with and with out lipase.
difference between Chlamydomonas cells and Volvox cells.
The gene for sickle-cell anemia exhibits heterozygote advantage. An individual who is an HB-A/HB-s heterozygote has increased resistance to malaria and therefore has greater fitness than the HB-A/HB-A homozygote, who is susceptivle to malaria, and..
Two NotI restriction enzymes cleave DNA on opposite sides of the Dbm gene in a species of yeast. A molecular probe for Dbm detects a DNA restriction fragment of 8.5 kb in organisms that are wild type at Dbm.
How is the DNA of prokaryotes organized? In chromosomes? If so, how many, what shape? what are the characteristic shapes of individual bacteria cells? Give Latin and English terms.
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