Global air circulation cells move air "clockwise in the Northern hemisphere and counterclockwise in the Southern hemisphere".
<u>Answer:</u> Option B
<u>Explanation:</u>
Global circulation is defined as the global connection of winds, through which the requisite heat transport from tropical latitudes to polar latitudes carried out. Each hemisphere comprises with three cells, such as Hadley, Ferrel and Polar cell, air circulation take place in this through the complete depth of the troposphere.
The worldwide circulation cells allow passage of air in clockwise pattern in the northern hemisphere while in southern hemisphere circulate in counter-clockwise pattern from equator to poles but in different directions and at different latitudes.
Answer:
E
Explanation:
Genetic tests are mainly useful in determining the underlying factors of the sickness. The tests don't always provide the cure for such sickness and the sickness are always complex and difficult to comprehend which is the reason why most individuals/patients are scared and anxious to get tested because there is no guarantee for getting total cure.
Answer:
Green Fluorescent Protein Labelled Bacteria
Explanation:
Green Fluorescent Protein labeling is very useful in studying prokaryotes. It is highly likely that the bacteria was also labelled. That's why after lysis and density level differentiation in a centrifuge the pellet start glowing green.
It is c I believe cause the human cells can’t make their own food like plants do when they photosynthesis
Answer:
a) Y-STR analysis
b) No, but it can rule out if he did <em>not</em>
c) Because his daughter cannot pass a Y chromosome on
d) mitochondrial DNA analysis
Explanation:
a) Because they are tracing male lineage, they are likely carrying out Y STR analysis, which looks at short tandem repeats (STRs) on the Y chromosome. Because the Y chromosome doesn't participate in crossing over, it can be reliably traced back generations and trace the paternal line, because it undergoes very little changes over time.
b) Y-STR analysis is not the best for narrowing complete specificity to one person. The Y chromosome is highly unchanged throughout generations, so it is difficult to determine differences between closely related males. However, it can rule out paternity if the Y-STRs between tested males do not match
c) Only his daughter went on to produce direct descendants still alive today. Because she is female, she could not have harbored the Jefferson Y chromosome, any of her male children will have the Y chromosome of <em>their </em>father. Therefore, they have to look at a male elsewhere in the Jefferson family to match the Y chromosomes, hence the paternal uncle.
d) Mitochondrial DNA is often used to trace maternal ancestry. Mitochondria are organelles in the cell that possess a small amount of DNA. This DNA is passed on through the maternal line (because when the sperm and egg fuse during fertilisation, the egg has thousands more mitochondria in the cell, and therefore contributes thousands of times more mtDNA than the sperm).
