Answer:
C) 91%
Explanation:
First,
Express the Dominant phenotype as homozygous dominant(BB) and heterozygous(Bb).
Based on hardy-Weinberg equilibrium,
homozygous dominant (BB) Brown eye individuals will have the following percentage
B × B
(Where B = 70%)
70% × 70%
= 49%
heterozygous dominant (Bb) Brown eye individuals will have the following percentage
Using 2 × B × b (where B =70% and b = 30%)
2 × 70% × 30%
= 42%
The proportion of the subsequent generation with brown eyes
(homozygous dominant, BB + heterozygous dominant, Bb)
= 49% + 42%
= 91%
Glucose is the preferable source of energy for E. coli cells. By adding small amounts of glucose, 0.05% in this case, it would enable cell growth to proceed as usual until it has reached mid log growth phase. At this point, the small amount of glucose added should have been depleted and the E.coli cell will now be dependent on lactose present as its source of nutrients. Lactose will also inactivate lac repressors and given the lack of glucose, CAP binding to high amounts of cAMP will be activated and increase expression of lac operon genes.
It should be noted that this system of expression may not tightly regulate the expression of lac operon before the E.Coli reaches exponential phase. As lactose is still present, lac repressors will be inactivated throughout the entire experiment and hence small amounts of proteins might be produced even when not auto-induced. After auto-induction, CAP-cAMP protein complex will simply upregulate expression of lac operon genes.
Temperature-Thermometer
Mass-Balance
Length-Meter stick
Volume-Cylinder
Scientist can test this question
Answer:
Surfactants <u>reduces</u><u> surface tension of water </u>and <u>promotes</u><u> emulsification</u>.
Explanation:
Surfactant is generally an organic molecule or compound that is amphiphilic in nature. Surfactants can act perform as emulsifiers, detergents, foaming agents, dispersants and wetting agents.
Surfactants decreases the surface tension between the solid and liquid, gas and liquid and two liquids and can acts as emulsifying agents, cleaning agents, dispersing agents, foaming and anti-foaming agents.
