Can any of the potential fathers be excluded? Explain, claimed n Barry, wie o, B

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Can any of the potential fathers be excluded? Explain, claimed n Barry, wie o, Barry e O, Barry who c 6 In 1943, actor Charlie Chaplin was sued in court for child support by an actress named Joan Chaplin was the father of her child. Blood evidence was presented at the trial: Chaplin was was blood type A and the child was blood type B (the Rh factor was not tested). Presented w the jury ruled in favor of Barry, and ordered Chaplin to pay child support until the child's 21st jury make the right decision? Why or why not? th this evidence 7 Cystic fibrosis is an autosomal recessive genetic disorder that primarily manifests in the respiratory system. Amy fibrosis), is homozy- undergoes genetic testing and finds that she is a carrier of the recessive gene (f, which codes for cystic meaning that she is heterozygous (F). Her husband Rory undergoes testing as well and learns that he gous dominant (FF F does not code for cystic fibrosis). They are seeking genetic counseling to find out their probability of having a child with cystic fibrosis. Use the Punnett square in Figure 28.13 to help them find answerS What is the father's phenotype? What is the mother's phenotype? What is the probability the offspring will a be homozygous dominant? b be heterozygous? F Dominant, does not code Rory's genotype-FF be homozygous recessive? d have cystic fibrosis? e not have cystic fibrosis? C for cystic fibrosis f -Recessive, codes for cystic fibrosis RIGURE 28.13 Punnett square. 8 You have just tested two patients' color vision, one male and one female, and found that both have cel blindness Can you conclusively determine the male's genotype? Can you conclusively determine to genotype? Explain why or why not for both patients. What are each patient's potential genotypes? the female's

Explanation / Answer

6)the chaplin blood group was o, while barry blood group was A ,but in the child the blood group was B,this proves that the chaplin was not father of the child, because by blood grouping the if mother is A and father isO then the child blood group might be Aor O but not B,this proved chaplin was not the father of the child but the lawyer of Barry convicted the court that the tests were inadmissible as evidence, so the court ordered chaplin to support the child. 7)the fathers phenotype is normal , the mothers phenotype is a carrier,the probability of the offsprings (would be normal phentype but 50% of the children will have heterozygous genotype) is heterozygous, (cystic fibrosis is autosomal recesive disorder) 8.Colour blindness:it is a Xlinked inheritances means that traits that are determined by alleles carried on the Xchromosome , genotype of colour blind ness male is XbY(in males it is seen more because they have oneX and oneY chromosome and it is Xlinked chromosome) genotype in female is XbXb(it is seen less in females because female has 2 X chromsome, a defect in one is typically compensated for by the other chromosome if both Xchromosome has defect then the female become colourblind.)

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