Questions 1-3 refer to the pedigree below that represents the presence of PTC tasting in a D.C. area family. PTC tasting is inherited through a dominant allele (T). 1 The genotype of person #4 is:

I Review Lesch-Nyhan syndrome (OMIM 300322) is a rare X-linked recessive disorder that produces severe mental retardation, spastic cerebral palsy, and self- mutilation. Part A What is the probability that the first son of a woman whose brother has Lesch-Nyhan syndrome will be affected? Express your answer as a fraction (example 1/16). Submit Request Answer Part B If the first son of the woman described in (a) is affected, what is the probability that her second son is affected? Express your answer as a fraction (example 1/16). Submit Request Answer

A 52-year-old client is in the terminal stage of leukemia. The client has been married for 25 years. He and his wife have three children, ages 15, 18, and 22. One child is graduating from high school, and the 22-year-old is graduating from college. The client and his brother are co-owners of a family hardware business that has been in the family for 60 years. The client was diagnosed with leukemia 10 years ago and has been receiving treatments during reoccurrences since then. He has always been optimistic, but, for the past 2 years, the treatments have not been as successful as in the past. His symptoms have exacerbated and return shortly after the treatments. The physician has told him that, unfortunately, further treatments are to no avail. The client is distressed and in denial of the fact that life is short. He has become depressed because he is concerned about what will happen to his family and his business. The client does not want to visit family members or friends. He has…

questions below: Aura and Ryan are expecting a child. Aura has dark eyes and Ryan has light eyes. Aura's mother has light eyes. Draw a Punnett square and be sure to include the following information for full credit: 1. Place the parents alleles at the top and on the left side. 2. Write in the allele crosses inside the Punnett squares. 3. Write out the genotypes probabilities for an offspring. 4. Write out the phenotype probabilities for an offspring. 5. What is the probability that Aura and Ryan could have a child with light eyes, even if light is recessive to dark? Note: For this question, you will have to go further back into the family tree to get Aura's genotype.

Questions: 1. Length of fur is also genetically determined. The allele L produces long fur and its corresponding allele, I, produces short fur. Long fur is dominant to short. a) You mate 2 hamsters. Both heterozygous for brown long fur. Would you expect any of the offspring to have black short fur? If so, what proportion would have black short fur? b) What proportion would have black long fur? 2. In cats, yellow coat color is due to a gene, b, and black coat color is due to its allele, B. The alleles b and B are sex-linked (i.e. are located on the X chromosome). Because of Barr body formation, the heterozygous condition results in tortoise shell colored cats (both black and yellow patches). a) What kinds of offspring would be expected from the mating of a black male with a yellow female? b) Of a yellow male with a tortoise female?

See photo attached.

Questions 1-3 refer to the pedigree below that represents the presence of PTC tasting in a D.C. area family. PTC tasting is inherited through a dominant allele (T). 4 The genotype of person #2 is: O a.TT O b.Tt OCT? O d.tt

give answer asap please.

What is the genotype of a "normal" male with no Hemophilia A? a b с d e X^NY X^n Y X^N X^N X^N X^n X^n X^n

Questions: 1. Length of fur is also genetically determined. The allele L produces long fur and its corresponding allele, I, produces short fur. Long fur is dominant to short. a) You mate 2 hamsters. Both heterozygous for brown long fur. Would you expect any of the offspring to have black short fur? If so, what proportion would have black short fur? b) What proportion would have black long fur?