Name: Per: Desk: Sec: Date: Blood Typing

Transcription

1 Name: Per: Desk: Sec: Date: lood Typng Codomnance- When both alleles are expressed at the same tme Example: AO system of blood types Ths s an example that uses a 3 allele system. A person s blood type s based on the absence or presence of certan protens n hs or her red blood cells. A s codomnant wth (Nether covers the other both are expressed ndependently.) A s domnant over O (Only A s expressed f A and O are present. s domnant over O (Only s expressed f and O are present. Possble Genotypes Phenotypes Type A Type A Type Type Type A Type O Questons 1.) If you have type A blood, what are your possble genotypes? 2.) If you have type blood, what could your genotypes be? 3) If you have type A blood, what must your genotype be? 4,) If you have type O blood, what must your genotype be? 5.) Could two ndvduals wth type A blood ever produce any offsprng wth type O blood? Explan your answer completely. 6.) Could two ndvduals wth type O blood ever produce any offsprng wth type A blood? Explan.

2 7.) Could a type O ndvdual and a type A ndvdual ever produce any offsprng wth type A blood? Explan. 8.) A man has type A blood and hs wfe has type. A physcan types the blood of ther four chldren and s amazed to fnd one of each of the blood types among them. How could ths happen? 9.) A woman sues a man for the support of her chld. She has type A blood, her chld has type O, and the man has type. Could the man be the father? Explan. 10.) A wealthy elderly couple de together n an accdent. Soon a man shows up to clam ther fortune, sayng that he s ther only son who ran away from home as a boy. Other relatves dspute hs clam. Hosptal records show that the deceased couple were type A and O respectvely. The clamant to the fortune was type O. Could he be ther son? Explan.

3 11.) Suppose two newborn babes were accdentally mxed up n the hosptal. In an effort to determne to whch parents each baby belonged, the blood types of the babes and parents were dentfed. From the followng test results, dentfy whch baby belongs to whch parents and ther genotypes Indvdual lood Type Genotype Parents Name. aby #l O aby #2. Mrs.rown Mr. rown Mrs. Smth Mr. Smth A A rown s Smth s

4 Name: Per: Desk: Sec: Date: lood Typng Codomnance- When both alleles are expressed at the same tme Example: AO system of blood types Ths s an example that uses a 3 allele system. A person s blood type s based on the absence or presence of certan protens n hs or her red blood cells. A s codomnant wth (Nether covers the other both are expressed ndependently.) A s domnant over O (Only A s expressed f A and O are present. s domnant over O (Only s expressed f and O are present. Possble Genotypes Phenotypes Type A Type A Type Type Type A Type O Questons 1.) If you have type A blood, what are your possble genotypes? and 2.) If you have type blood, what could your genotypes be? and 3) If you have type A blood, what must your genotype be? 4,) If you have type O blood, what must your genotype be? 5.) Could two ndvduals wth type A blood ever produce any offsprng wth type O blood? Explan your answer completely. Yes, If they are both heterozygous for type A They have a 25% chance of producng a type O chld. 6.) Could two ndvduals wth type O blood ever produce any offsprng wth type A blood? Explan. No, they have a 0% chance of producng a type A chld because they don t have the allele.

5 7.) Could a type O ndvdual and a type A ndvdual ever produce any offsprng wth type A blood? Explan. Yes, they have a 50% chance of producng type A chld wth type A blood. They would be heterozygous recessve the domnant allele parent and the recessve I allele from the other. 8.) A man has type A blood and hs wfe has type. A physcan types the blood of ther four chldren and s amazed to fnd one of each of the blood types among them. How could ths happen? The type A parent s heterozygous and the type parent s heterozygous thus they wll have a 25% chance of producng each of the four phenotypes. 9.) A woman sues a man for the support of her chld. She has type A blood, her chld has type O, and the man has type. Could the man be the father? Explan. Yes, he could be the father of the chld f he s heterozygous for type blood and the mother s heterozygous for type A blood. He has a 25% chance of beng the father. 10.) A wealthy elderly couple de together n an accdent. Soon a man shows up to clam ther fortune, sayng that he s ther only son who ran away from home as a boy. Other relatves dspute hs clam. Hosptal records show that the deceased couple were type A and O respectvely. The clamant to the fortune was type O. Could he be ther son? Explan. No, he s not ther son. Wth the couple beng and genotypes there s a 0% chance of them producng a type O chld snce and are not domnant over

6 11.) Suppose two newborn babes were accdentally mxed up n the hosptal. In an effort to determne to whch parents each baby belonged, the blood types of the babes and parents were dentfed. From the followng test results, dentfy whch baby belongs to whch parents and ther genotypes Indvdual lood Type Genotype Parents Name. aby #l O Smth s aby #2. A rown s Mrs.rown Mr. rown A Mrs. Smth Mr. Smth rown s Smth s