An e.coli cell without a functional laci gene is expected to always produce B-galactosidase. i found the answer to this question on a set of quizlet flash cards. i have provided the link below in case you would want to look at the flash cards for reference.
https://quizlet.com/62335789/genetics-important-concepts-flash-cards/
D the correct answer is d
C is the proper answer. They have been reduced by using unleaded gasoline because lead can harm the air and water we breathe, so using less of it will help reduce the pollution being caused by it.
Its called haermaphrodite.......................A
If two species of tertiary consumers are living together in a community, there build a competition between them.
Tertiary consumers feed on primary and secondary consumers and there is no one to feed on them hence named as Apex consumers.
If two consumer species are living together, there will be limited amount of food source which will give birth to competition and which might to lead extinction of one specie.
