Answer:
Option (4).
Explanation:
Lac operon is present in E.coli that regulate the metabolism of lactose in the bacteria. Lac Operon consists of three genes : Lac Y, lac Z and lac A, an operator and a promoter.
I+ P+ Oc Z− Y+ / I− P+ O+ Z+ Y− , in this case inducer is present, promoter is present, constitutive region and the gene lac Z and lac Y indicates the Z and Y. The permease enzyme will made in the presence and absence of lactose due to the presence of I+ P+ Oc in the cell but beta galactosidase is only made in presence of lactose as Y− gene is present in the diploid cell.
Thus, the correct answer is option 4.
Answer:
Consequences of the widespread use of plastic materials can be an increase in levels pollution and the overflowing of landfills because most plastics are non-biodegradable and can take a very long time to disappear unlike things like paper which are biodegradable.
A lunar eclipse can only occur when the moon is at a full moon phase
Answer:
Scientists believe that the reason Hawaii has so many volcanoes is because it is located above a hot spot that is suspected to start at earths liquid core.
Explanation:
B. Asexual reproduction. That’s how bacteria grows
