Biology And Biomedical Sciences BIOL 2960 Lecture 9: Lecture 9
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7- Human cells have a gene that codes for aspecific enzyme called E. Mouse cells do not carry the enzyme.Mouse-human hybrids are formed, and the following stable lines arestudied for the human chromosomes present and the presence orabsence of E:
Hybrid Cell Lines | ||||||
1 | 2 | 3 | 4 | 5 | 6 | |
Human Chromosome | 21, 18, 16, 7, 5, 2 | 18, 16, 8 ,3 | 21, 18, 1 | 23 ,19, 17, 15, 11, 14 | 18, 6, 2, 9, 8, 3, 1 | 21, 5 |
E Activity | No | No | Yes | No | Yes | No |
Which human chromosome contains the gene forthe enzyme E?
1. What is the average, maximum and minimum percent germination for each
treatment?
2. Which treatment had the biggest influence on germination?
3. Knowing that in the Midwest and other parts of the country we use sodium
chloride to treat roads in the winter, how could this effect vegetation along
roadways in the spring?
x | Number of seeds that sprouted/germinated | |||
Group Number | # of Seeds per treatment | 0% Salt | 6% Salt | 12% Salt |
1 | 15 | 14 | 12 | 8 |
2 | 15 | 15 | 13 | 6 |
3 | 17 | 17 | 14 | 5 |
4 | 18 | 17 | 15 | 10 |
5 | 20 | 20 | 18 | 9 |
6 | 16 | 15 | 13 | 11 |