Two autosomal genes, G and H, are 80 map units apart. You perform the following testcross: Gh/g H x gh/gh. At what frequency would you find GH/g h progeny? 40% 25% 50% 30% 20%
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- In humans, the genes for red-green color blindness (R = normal, r = color blind) and hemophilia A (H = normal, h = hemophilia) are both X-linked and only 3 map units apart. Suppose a woman has four sons, and two are color blind but have normal blood clotting and two have hemophilia but normal color vision. What is the probable genotype of the woman? HR/hr Hr/hr hr/hR Hr/hR HR/HrConsider the selfed offspring of a AaBbCcDd individual: What is the probability that offspring will have the following genotypes: AABBCCDD AaBbCCDd ● • A_B_C_D_ BbCCDd ● ● ● ● ● 1/4 x 1/4 x 1/4 x 1/4= 1/256 1/2 x 1/2 x 1/4 x 1/2= 1/32 3/4 x 3/4 x 3/4 x 3/4= 81/256 1 x 1/2 x 1/4 x 1/2= 1/16 Same genotype as the parent? A.1 B. 1/1/12 C. D.1/8 E.1/16This problem refers to the MN and ABO loci mentioned in class. It also refers to the Rh locus, which is responsible for the positive/negative part of the blood type. The Rh+ allele is dominant to the Rh- allele at this locus. Select all couples who could be the parents of a child with phenotype N, AB- based on the phenotypes at these three loci If none of these couples could be the parents of this child, select "None of These. Select one or more: Mother Type MN, B+ and Father Type N. O+ Ob Mother Type MN, AB- and Father Type M, O- Mother Type M, A+ and Father Type N, B- O d. None of These Mother Type MN, O+ and Father Type MN,A-
- In the Bombay phenotype, a homozygous recessive individual hh appears to have blood type O because she is unable to produce the H substance, which is required to make the A or B blood-type antigens. HH or Hh individuals normally produce H substance. What is the probability that a child will test as type AB blood from parents with the following genotypes? IAIO Hh X IBIA hh 3/16 1/8 1/4 3/4 1/2A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has codominant alleles M and N. If both children are of blood type M in addition to their ABO blood type, list all of the possible parental phenotypes for the ABO, MN and Rh traits.In the Bombay phenotype, a homozygous recessive individual hh appears to have blood type O because she is unable to produce the H substance, which is required to make the A or B blood-type antigens. HH or Hh individuals normally produce H substance. What is the probability that a child will test as type A blood from parents with the following genotypes? IAIO Hh X IBIO Hh 3/16 7/16 1/2 1/4 3/4
- The trihybrid e+f+g+/efg is test crossed to the triple recessive efg/efg and the following genotypes were obtained in the progeny: efg = 2; efg = 28; e'fg* = 9; e*rg 32; efg 73; e*fg* = 10; ef g* =10; e'fg 2; %3D "The odd gene is The gene order is The gene distance between e-f is The gene distance between f-g is The gene distance between e-g isA woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has co dominant alleles M and N. If both children are of blood type M in addition to their ABO blood type, list all of the possible parental phenotypes for the ABO, MN and Rh traits.Based on this karyotype, what is the probability that any one of this women's children would would also be carriers for Down's Syndrome? a 100% or 1/1 b 50% or 1/2 c 25% or 1/4 d 10% or 1/10 e None would be carriers
- Given the karyotype shown at right, is this a male or a female? Normal or abnormal? What would the phenotype of this individual be?Several genes in humans in addition to the ABO gene(I) give rise to recognizable antigens on the surface ofred blood cells. The MN and Rh genes are two examples. The Rh locus can contain either a positive or anegative allele, with positive being dominant to negative. M and N are codominant alleles of the MN gene.The following chart shows several mothers and theirchildren. For each mother-child pair, choose the fatherof the child from among the males in the right column, assuming one child per male.Mother Child Malesa. O M Rh(pos) B MN Rh(neg) O M Rh(neg)b. B MN Rh(neg) O N Rh(neg) A M Rh(pos)c. O M Rh(pos) A M Rh(neg) O MN Rh(pos)d. AB N Rh(neg) B MN Rh(neg) B MN Rh(pos)In a paternity suit, a woman with type O blood claims that a man with type AB blood is the father of her type O baby. List the genetypes of the mom, man, and baby. Can the woman prove he is the father or can he is not? Why or why not? If the accused man was type A insyead of type AB, what would be his possible genotypes? Could the woman prove he is the father? Can the man prove he is not the father? Why or why not?