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- 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 or1. What is Benji’s blood type phenotype? 2. Could Benji have a type O child? Explain1. A man with O blood type marries a woman with AB blood type. What are the expected genotypic and phenotypic ratios for the children? a) What is the genotypic ratio of the above cross (Write number next to genotype)? ___________________________________________________________________ b) What is the phenotypic ratio of the above cross? (Write number next to phenotype)? ___________________________________________________________________
- 1. Study the given alleles. Write the correct phenotype for each genotype. X– normal Genotype XC – Color-blind Phenotype XX XY XCXC www m XX www w ww w 2. Study the given alleles. Write the correct genotype for each phenotype. X- normal Genotype хн- Hemophiliaс Phenotype Hemophiliac female Hemophiliac male Normal female carrier of the gene Normal male Normal female- 1 attachment If these two individuals with the following genotypes are crossed Parent 1: AAbbCCDDeeFf Parent 2: aaBBccddEEFf What is the expected genotypic ratio of the F, generation? (3 pts) A. ¼ AaBbCcDdEeFf: ½ AaBbCcDdEeFF: ¼ AaBbCcDdEeff B. ½ AaBbCcDdEeFf: ½ AaBbCcDdEeff C. 1 AaBbCcDdEeFF: 1 AaBbCcDdEeFf: 1 AaBbCcDdEeff D. 4 AaBbCcDdEeFF: ½ AaBbCcDdEeFf: 4 AaBbCcDdEeff1. A man with AB blood type marries a woman with AB blood type. What are the expected genotypic and phenotypic ratios for the children? a) What is the genotypic ratio of the above cross (Write number next to genotype)? ___________________________________________________________________ b) What is the phenotypic ratio of the above cross? (Write number next to phenotype)? ___________________________________________________________________
- A graduating nursing student wanted to know the different blood groups and how they can be inherited. She understood that multiple allele is the inheritance pattern for ABO blood type while complete dominance for Rh factor (Rh + is dominant over Rh -). Now she wanted to know what the probable blood types from the 3 systems on her future children are. Consider the nursing student has AB, Rh negative and her current husband has O, heterozygous Rh positive. 1. What is the probability of having a child with a blood type of type O? A. 25% B. 100% C. 75% D. 50% E. 0% 2. What is the probability of having a child with a blood type of type A Rh positive? A. 1/4 B. 3/8 C. 1/2 D. 3/4 E. 1/8 3. What is the probability of having a child with a blood type of type B Rh negative? A. 3/4 B. 1/8 C. 1/4 D. 1/2 E. 3/8 4. heterozygous Rh positive. What are the possible blood types of her children? A. A Rh+, A Rh-, B Rh+, B Rh-, O Rh+, O Rh- B. A Rh+, B…What is the probability of a hemophiliac daughter if the mother is a carrier and the father is normal? Remember hemophilia is caused by a recessive X-linked allele. 1/2 01 00 3/4 OCis thal ui ANensn hilia is an inherited genetic disorder linked to the nosome that results in ineffective blood clotting when a blood is damaged. The most common type, hemophilia A, occurs 5000 male births. Any male who carries the gene will express enotype. Hemophilia is extremely rare in women. Parents Carrler female Normal male couple wish to have children. The woman knows she a rrier for hemophilia. The man is not a hemophiliac. Use e notation Xh for hemophilia and XH for the dominant ele to complete the diagram on the right including the arent genotypes, gametes and possible fertilizations. rite the genotypes and phenotypes in the table below. XY XhXh Gametes Xh Xh Genotypes Phenotypes Possible lertilizations Male children XhY Xhx XhY XhX Paternal gametes Paternal gametes Female children 00 00 A second couple also wish to have children. The woman knows her maternal grandfather was a hemophiliac, but neither her mother or father were. Determine the probability she is a carrier…
- The following scenario can be seen on Ch 29 Clinical case study on Heredity (27-year-old with normal pregnancy): Mrs. Rodriguez’ blood type is type O, and her husband’s is type A. She is currently pregnant and she would like to know what type of blood her baby will have. For discussion 7 please answer the following questions: What are the genotype and phenotype of Mrs. Rodriguez? What are the genotype and phenotype of Mr. Rodriguez, given that Mr. Rodriguez’s mother has O blood type and his father has A blood type? (use Punnett Square on your worksheet to find out the genotype of Mr. Rodriquez) What is the probability that Mrs. Rodriguez’s baby will have O blood type? A? B? AB? (use Punnett Square as your worksheet) Type O =______% Type A = _____ % Type B =______% Type AB =______%Finally, draw out a Punnett square to help you consider the cross between these possible gametes. Sex-Linked1 := Homework • Unanswered What are the possible genotypes of the offspring shown in your Punnett square? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. XBxb and xbY a b XBXB and xbY Neither of these answers is correct Unanswered • 1 attempt left Submit Sex-Linked2 Homework • Unanswered What are the possible phenotypes of the offspring? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Females with normal color vision and males who are colorblind Females who are colorblind and males who have normal color visionWhat 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 %,
