The answer is 2 I did the test and got it right
A buffer, for example, sodium bicarbonate (baking soda)
There are high risk of following abnormalities or mis- happening if chorionic villus sampling (CVS) are performed before 10th week of pregnancy:
a) Fetal defects
b) Miscarraige
c) Fetal anomalies.
d) Risk of infection
As per the standard recommended by American Congress of Obstetricians and Gynecologists, the standard time to perform this test is between 10th & 12th week as at that time the chances of risk to fetus is very negligible. In no case CVs shall be conducted before 9th week of gestation.
It is estimated that there is a risk of 0.5 to 1 % of miscarriage after CVs which usually happens within the 3rd day of test.
Answer:
The correct answer is a inducer(lactose) = acts by stepping on the gas pedal.
Explanation:
In lac operon lactose act as an inducer.Lactose exerts its action by binding with the repressor and inducing a conformation al change in the repressor molecule and prevent the later from binding to the operator region.
This ultimately result in the expression of the structural genes such as Lac Z ,Lac Y and Lac A.
According to the given question if the lac operon is described using a car analogy then the inducer lactose will act by stepping on the the gas pedal and this is the positive regulation of Lac operon.
