True
- Tubuloglomerular Feedback (TGF) is a type of internal feedback system in kidney physiology.
- The glomerulus in each nephron receives information from the renal tubules, which are located downstream in the tubular fluid (an upstream area).
- One of the processes the kidney utilizes to control glomerular filtration rate is tubuloglomerular feedback (GFR).
- An elevated distal tubular sodium chloride concentration results in a basolateral release of adenosine from the macula packed cells, and this process is known as purinergic signaling.
- This starts a chain of events that eventually raises the GFR to the proper level.
<h3>What is tubuloglomerular feedback mechanism?</h3>
A feedback system found inside the kidneys is called tubuloglomerular feedback in the study of renal physiology. The glomerulus in each nephron receives information from the renal tubules.
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ADP is converted to ATP for the storing of energy by the addition of a high-energy phosphate group.
Answer:
The genes are linked, and the arrangement is coupled (one homolog has both dominant alleles; the other homolog has both recessive alleles).
RY
/
ry
Explanation:
R_= colored aleurone
rr= colorless aeurone
Y_= green plant
yy= yellow plant
They do a testcross between a plant of unknown genotype and phenotype and a plant that is homozygous recessive for both traits (yr/yr) the following F1 is obtained:
- 88 Colored, green (RY/ry)
- 92 colorless, yellow (ry/ry)
- 8 colorless, green (rY/ry)
- 12 colored, yellow (Ry/ry)
If the genes assorted independently, all of the possible offspring phenotypes would appear in the same frequency. However, they obtained 2 phenotypes much more abundant that the other two. Since recombination is a rare event during crossing over, when two genes are linked the recombinant gametes are produced less frequently than the parentals.
We can propose that the phenotypes Colored, green (RY) and colorless yellow (ry) are the parental gametes, and the unknown plant has the arrangement RY/ry, with both genes linked.
