Question

Polycystic kidney disease is a dominant inherited condition. Polycystic kidney disease causes cysts to grow on the kidneys, which may lead to kidney failure. (20 pts)

a. What are the two alleles? Be sure to label which allele is healthy and which is the allele that causes polycystic kidney disease.

b. What is the possible genotype/are the possible genotypes for someone who has polycystic kidney disease?

c. What is the possible genotype/are the possible genotypes of someone who is healthy?  

d. Joe has polycystic kidney disease. His father did, but his mother did not. Joe also has a healthy brother and a healthy sister. What are the genotypes of this family? Fill in the table below. (You will most likely need to draw Punnett Squares to help you answer this question, but you do not need to show any Punnett Squares that you draw.)

Answer 1

Answer:

Polycystic kidney disease or PKD induces several cysts to develop in the kidneys. A special type of fluid is found in the cysts. Whenever the cysts filled with fluid and grow with numerous numbers or if they get extremely large, the damage starts in the kidneys. Then the PKD cysts can slowly replace the abundance of the kidneys which leads to decreasing kidney function and directing to kidney failure. Sometimes PKD along with high blood pressure leads to kidney failure.

It is also noted that all people with PKD are not developed kidney failure. Specific people retain a high chance of kidney failure those are patients who have high blood pressure or the patients who are men have more chance of kidney failure.

a) In Autosomal Dominant Polycystic Kidney Disease the two alleles are PKD1 and PKD2.

In comprehensive, the disease is induced by a pathogenic variant in one allele of PKD1 or PKD2 genes, while the other allele is normal.

b) The phenotypes that healthy the common kinds of polycystic renal disorder (PKD)—autosomal dominant (ADPKD) and chromosome recessive (ARPKD)—are extremely variable in penetrance. this can be in terms of severity of urinary organ malady, which might vary from death to adequate operating into maturity, characteristics of the disease, and alternative extrarenal manifestations in ADPKD. Influences of the germline mutation ar at the sequence and allelomorphic levels, however, intrafamilial variability indicates that genetic background and environmental factors are key. In ADPKD, the cistron concerned, PKD1 or PKD2, maybe a major issue, with ESRD occurring twenty periods of time later in PKD2. Mutation position may additionally be vital, particularly in terms of the probability of vascular events, with 5′ mutations most damaging. Variance element analysis in ADPKD populations indicates that genetic modifiers ar necessary, however, few such factors (beyond co-inheritance of a TSC2 mutation) are known. secretion influences, particularly related to additional severe disease in feminine people, indicate a job for nongenetic factors. In ARPKD, the mix of mutations is important to the makeup outcome. Patients with 2 truncating mutations have a deadly constitution, whereas the presence of a minimum of one missense modification is compatible with life, indicating that a lot of missense changes ar hypomorphic alleles that generate part purposeful supermolecule. Clues from animal models and alternative kinds of renal disorder highlight potential modifiers. the data that's currently offered on each gene is of sizeable prognostic price with the prospects from the continuing genetic revolution that further risk factors are going to be unconcealed.

c) In a healthy person, no such mutation occurs in the genes. So the genotypes are normal healthy people.