SPAN 101 Lecture 10: Spanish notes.3
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The following table shows several bacterial strain lacoperon genotypes (some are partial diploids).
a) Fill in the blanks in the âlactose absentâ and âlactosepresentâ columns in this table. (+) means significant levels ofactive Ã-galactosidase enzyme can be detected. (â) meansno significant levels of active Ã-galactosidase enzyme.The first line is filled in for reference.
Strain genotype | Lactose absent | Lactose present |
1. lacI+ lacP+ lacO+lacZ+ lacY+ | ||
2. lacI+ lacP+ lacOclacZ+ lacY+ | ||
3. lacI+ lacP+ lacOclacZâlacY+ | ||
4. lacIs lacP+ lacOclacZ+ lacY+ | ||
5. lacIâlacP+lacO+ lacZ+ lacY+ /lacI+ | ||
6. lacIs lacP+ lacO+lacZ+ lacY+/ lac I+ |
b) If lactose is absent and glucose is present in the culturemedium of strain 4, will significant levels of activeÃ-galactosidase enzyme be detected? Explain⦠in brief, just becausethere is lots of room left, you donât need to fill it.