1. Calalculate and draw the mating probiliities involved in the ABO Blood type and Albinism in Human, using the forke-line method. Draw F1 and F2 generation; Hint one disorder follow the mendeline pedigree method and the other follows vo-dominace. consideration of pigmentation alone, consideration of Blood type alone 2. calculate and draw the mating probalilities involved in the ABO Blood type and albinism in Humans, using the fork-line method . draw both F1 and F2. Hint: one disorder follows the mendeline pedigree and the follows c0- dominance. a. consideration of Blood type b. consideration of H substance
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Consider the cross. Both parents have the genotype AaBBCcddEe. What is the probability that any offspring will have the genotype AABBCCDDee? What is the probability that any offspring from parents who are both albino (without pigmentation but both have one man and woman are both normal recessive trait) will be an albino? What is the probability of autosomal (not sex-linked) albinism that their first child will be an albino? His wife and their first child each have extra digits (six fingers, a dominant trait). The couple wants to know if their second child will have extra digits. Their second child is a daughter. What is the probability that their next child will have extra digits? Labrador retrievers are controlled by two unlinked coat color loci. Labs homozygous for the autosomal recessive allele cannot deposit any pigment in their hair. Labs homozygous for the recessive allele make 'chocolate' pigment. Labs carrying at least one copy of the dominant allele can put either black or chocolate pigment. If we cross two labs heterozygous for both loci, what percentage of the offspring will be yellow? What percentage of the offspring will be black? Extension Mendel's Work Problems: More Sex-Linked Traits and the Cross. Red-eyed males (XY) with red-eyed females (X) produce red-eyed female offspring. What are the genotype and phenotype ratios of the males? In cattle, primarily Holsteins, there is a X-linked disease called anhidrotic ectodermal dysplasia (AED). Affected cattle have little hair, few sweat glands, and no incisors. What is the probability that Holstein may produce any affected (AED) offspring? (Draw the cross and use Mendel's method with an affected male and an unaffected female). In a woman, an inherited disease called phenylketonuria causes gradual deterioration of the muscles. Only boys are affected and they are always born to phenotypically normal parents. If both parents are carriers, what is the probability that their first child will be phenotypically normal? Pseudohypertrophic muscular dystrophy is an inherited disorder that primarily affects boys. The boys with the disease die in their teens. What is the probability that the disorder is caused by a dominant X-linked recessive allele? X-linked recessive trait: Human blood type in humans, red-green color blindness is inherited as an autosomal locus (X) with three alleles. Allele E produces the protein, allele e produces no protein, and alleles E and e are codominant to each other. Individuals carrying only the E protein in their blood have blood type A, those carrying only the e protein have blood type B, and those with neither protein have blood type O.
Madhur L.
For each problem, write down the GENOTYPES you are crossing, then construct a Punnett Square (except for blood type problems) and figure out the resulting genotypes. Then write the PHENOTYPIC RATIO of the offspring. Use your answers to complete questions on Exam 4. 1. Cystic fibrosis (CF) is an autosomal recessive trait (a). Assume that Emily (who has CF) decides to have children with a man who does not have CF and who is not a carrier of CF. What are their genotypes, and what is the probability that they will have a child who is a carrier for CF? 2. A) A woman with type O blood is expecting a child. Her husband is type A and her husband's parents both had type AB blood. What will be their child's blood type? B) A couple has one child with type AB blood. If one parent is heterozygous for blood type A and the other parent is homozygous for their blood type, what are the chances of their future children having: Type A blood? Type B blood? Type AB blood? O blood? 3. In Mendelfruit plants, fruit may be either round (RR), long (rr) or oval (Rr). A) Cross two oval-fruit plants. What is the phenotypic ratio of the resulting offspring? (what do they LOOK LIKE?) B) Cross a round-fruit plant and an oval-fruit plant. Give the phenotypic ratio of the offspring. 4. One form of familial hypercholesterolemia (FH) shows incomplete dominance. Homozygous dominant individuals (HH) have normal cholesterol, heterozygous individuals have mildly elevated cholesterol and homozygous recessive individuals (hh) have severe FH. A) If a woman with mild disease marries a man with no FH, what percent of their children will have severe FH? What percent will have mild FH? What percent will be normal? B) A man with severe FH has three children with a woman who does not have the condition at all. What are the phenotypic ratios of the offspring? 5. In roan cattle, red (R) and white (W) are codominant. Heterozygous individuals produce both red and white hairs, known as roan. When two roan cattle are crossed, what are the phenotypic ratios of the offspring? 6. In humans, one type of red-green colorblindness (n) is sex-linked and recessive. A) A woman who is a carrier marries a man with normal vision. What is the chance of having color-blind daughters? Color-blind sons? B) A heterozygous woman and a color-blind man marry. What is the chance of having color-blind daughters? Color-blind sons? 7. Hypophosphatemia (vitamin D-resistant rickets) is inherited as a sex-linked dominant trait (H). A) A normal woman and a man with hypophosphatemia marry. What is the chance of having daughters with rickets? Sons? B) A heterozygous woman and a normal man marry. Does the mother have rickets? What is the chance of having daughters with rickets? Sons?
Caroline M.
what the answer
Anand J.
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