Answer:
A,B and E
Explanation:
- I+: I refers to the lac repressor, the + indicates that the repressor is functional
- P+: P refers to the promoter region and the + indicates that the promoter is functional
- Oc: O refers to the operator region, but the Oc indicates that the operator is constitutive ie. that it is always on/ can't be turned off.
- Z-: Z refers to the LacZ gene which produces β-galactosidase. Z- indicates that this gene is non-functional
- Y+: Y refers to the LacY gene which produces the permease protein. Y+ indicates that this gene is functional
So based on the breakdown above:
- C is not true because the lac operon is an inducible system. The operator needs to be able to be repressed. In this case the operator is constitutive (always on) which is not the correct form.
- D is not true because Z-, no β-galactosidase is produced.
Only A, B and E apply.
mitosis and meiosis 2 are similiar .
... after mitosis , the daughter cells formed have the same numbeer of chromosomes and the number of chro,ososme after meiosis also remain same . The causes of same number of chromosomes are ......
...... duplication of chromosomes do not during interkinesis occur .
.............. if number of chromosomes also hhad remained half after meiosis 2 gametes so formed would be not normal .
desert, open ocean, lake, tropical rain forest
Explanation:
The net primary productivity tells us about how productive an ecosystem is. It is usually derived by the difference between the amount of carbon dioxide that producers used to the amount they release during their cellular respiration.
- The rainforest is the biome with the highest amount of net productivity.
- The amount of sunlight and organic matter used up during photosynthesis is very large.
- The tropical rain forest receives the highest amount of sunlight because the sun is overhead here.
- This provides energy to drive photosynthetic process in the presence of other available resources.
- Deserts are bare and lacks plants due to the extreme conditions here not favorable to life.
- The open ocean productivity is restricted to the photic zone where light is only able to reach
- Lakes are highly productive ecosystems.
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The answer is he was crazy and was glad that he had improved. In addition to separate peace the significance of finny’s shame at even thinking gene would take added roommate is that gene could swap him. Gene denotes to the correctness of being thrown into the naguamsett river on the first day of the winter session since it was his entrance into a new time in his life which is a step to self-confidence.
Answer:im pretty sure its called trophic level :)
Explanation:
