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:
What you've possibly learned is the different cycles, Animal Life, And Weather and Climate.
Answer:
The solute moves against the concentration gradient. (Ans. C)
Explanation:
Active transport: In this transport a substance moves against a concentration gradient. Active transport mechanism expending the energy to maintain ions or molecules right concentration in living cells. Active transport basically divided into two types:
1) Primary active transport: In which for the movement of ions across the membrane against their gradient they use directly a source of chemical energy from ATP. Example of active transport is sodium potassium pump.
2) Secondary active transport: It is also called as co-transport. They are using electrochemical gradient which is generated by active transport. In which for the movement of ions across the membrane against their gradient, and they don't require a source of chemical energy from ATP.
When a lineage splits into multiple line of descents, then, it leads to speciation. It is a process by which a single population evolves into different species. The process of speciation leads to the development of two or more species as the lineages are splitted. These two evolved species are genetically independent.
Hence, the blank can be filled with 'speciation'.
Answer:
Explanation:
All cells have CTYTOPLASM AND DNA.Hope this helps