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- What percentage of all children will be carriers? What is the sex of the carriers? 2. A heterozygous woman carrying the recessive gene for hemophilia marries a man who is not a hemophiliac. Assume the dominant gene is X" and the recessive gene is X". The woman's genotype is X"X", and her husband's genotype is X"Y. What is the potential percentage and sex of their offspring who will be hemophiliacs? % males; % females 100 What percentage can be expected to lack the allele for hemophilia? What is the anticipated sex and percentage of individuals who will be carriers for hemophilia? 2014 sex %,3) The ability to curl ones’ tongue up on the sides (T) is dominant to not being able to roll your tongue (t). a. A woman who can roll her tongue marries a man who cannot. The first child has the same phenotype as the father, what are the genotypes of the mother, father, and this child? b. What is the probability that the second child won’t be able to roll it’s tongue?6. Alice has type A blood and her husband Mark has type B blood. Their first child, Amanda, has type O blood. Their second child, Alex, has type AB blood. What is Alice's genotype? What is Mark's genotype?_ Show how you found the answer by completing the Punnett square(s) below: 7. Candace has type B blood. Her husband Dan has type AB blood. Is it possible for Candace and Dan to have a child that has O blood? Explain why or why not (use a Punnett square to help). 8. Ralph has type B blood and his wife Rachel has type A blood. They are very shocked to hear that their baby has type O blood, and think that a switch might have been made at the hospital. Can this baby be theirs? Explain why or why not (use a Punnett square to help).
- 1. A woman is colorblind. Construct a Punnett square and using versions of the letter “C” determine if she marries a man with normal vision: What are the chances her sons will be colorblind? What are the chances her daughters will be colorblind? What are the chances of having a carrier daughter? 2. Both the husband and wife have normal vision. Their son is colorblind. What can you conclude about the father’s genotype? What about the mother’s genotype? Father: Mother: 3. If a young girl has fragile X syndrome, a recessive trait (f), what is her genotype? What are the possible genotypes of her father and mother? Mother: _________ or __________ Father: _________________ If her brother also developed this condition, which parent (father, mother, or both) contributed a disease allele? Explain your answer as well as constructing Punnett squares to support your answer. 4. Both the mother and father of a hemophiliac son have normal blood clotting. What are the genotypes of the…Let us practice it again! Analyze the pedigree below to answer the questions that follow. Huntington's disease a disorder in which nerve cells waste away, or disintegrate, is passed down through families. certain parts of the brain Huntington's diseate llustration ereated in htps://pregenygenetion.com/ 1. What members of the family above are affected with the Huntington's disease? 2. Tnere are no carriers ior Huntungton's disease you either have it or you do not. Is Huntington's disease caused-by a dominant or recessive trait? 3. Identify the genotypes of the following individuals using the pedigree above. (homozygous dominant, homozygous recessive, heterozygous). I- 1 II -1: II -3: III - 4 : 4. How many children did individuals I-1 and I-2 have? 5. How many girls did II-1 and II-2 have? How many have Huntington's Disease? 6. How are individuals III-2 and II-4 related? I-2 and III-5?Can We Talk About Sex? Mindy B. Statter Abstract: A three–year–old female undergoes elective inguinal hernia repair and unexpectedly is found to have testes in the hernia sacs. A recommendation is made not to disclose the patient’s genotype to her mother. This case study addresses the ethical conflict of whether to disclose the patient’s male genotype to the parent that has been raising the child as female. B. Now that disclosure of a CAIS diagnosis is mandatory, what responsibility would a parent potentially have to override a doctor’s recommendations for gender maintenance?
- 5. Little Mary is blood type A. Her mother is blood type B. There is a question about whom Little Mary's father is. Joe is blood type O and Al is blood type AB. Who is most likely Little Mary's dad? Show two Punnett squares to PROVE your answer. Help Center | Schoology Blog | PRIVACY P1. What is the phenotype of the genetic disorder? 2. How does it express itself? 3. Does it cause you to be tall? 4. Your liver to function irregularly? 5. Do you feel no pain? 6. Are you born with extra teeth? 7. Does your body odor smell like maple syrup (maple syrup urine disorder)? 8.What does it do to you?O. exal B. Heredity Assume that dominant allele is B (brown eye color) and that recessive allele is b (blue eye color). Genotype of the father (male) is BB. Genotype of the mother (female) is Bb, Questions: 7. List all the possible genotypes and phenotypes and calculate the probability of each. 8. What is the probability of this couple having a child with brown eyes? What about blue eyes? Add Tip omment ASK Question Dow 5,288 66 APR 28 étv 260
- Part 1 - High School Blues Evan and Alexia had been happily married for seven years and had a delightful five-year-old son named Ryan. One day, while going through his old high school biology textbook, Evan stumbled on some troubling information. In the section on the genetics of eye color, he read that two blue-eyed parents cannot produce a brown-eyed child. This was disturbing to him because both he and Alexia had blue eyes, but Ryan had brown eyes. He and Alexia were very much in love and Evan didn't believe his wife had been unfaithful. Puzzled, he questioned his wife, who confirmed she had been faithful to him. Evan had known Alexia long enough to recognize when she was lying and detected nothing but honesty in her response. What is going on?1. Study the given alleles. Write the correct phenotype for each genotype. X – normal Gen otype xC - Color-blind Phenotype XX XY XXC xCY 2. Study the given alleles. Write the correct genotype for each phenotype. xH - Hemophiliac Phenotype X- normal Gen otype Hemophiliac female Hemophiliac male Normal female carrier of the gene Normal male Normal female 28 3. Determine the genotype and phenotype of the offspring. A color-blind mother (XCx) married a normal sighted (XY) father. Genotype: Phenotype: Genotype: Phenotype: Genotype: Genotype: Phenotype: Phenotype: a. There are b. There are c. There are d. There are % normal sons. % normal daughters. % color-blind sons. % color-blind daughters. % normal female, carrier of the disorder. or or or or e. There are orGiven the karyogram below, anSW Is this a male or female? female Do you see any abnormality? Yes 13 Write the karyotype (genetically speaking)|