4. You have been studying a trait that seems to be present in every generation within a particular family. Further, you have observed that every affected offspring has at wor least affected parent in any particular generation. bas berswoll wollsy nog wohl di lozin a) This trait is more likely due to a dominant or recessive allele? to vas of otsige smesno vns el role b) Interestingly, this allele is completely penetrant in the homozygous state while only 75% penetrant in the heterozygous condition. If two heterozygous individuals who carry this allele are mated, what is the expected proportion of affected progeny?

2. In the following types of matings, the phenotypes of the parents are listed together with the frequencies of phenotypes occurring among their offspring. Indicate the genotype of each parent (you may need to use testcrossesl). Parents Offspring I B:0 을 A: 을B 을 AB : B: A: 0 를 AB : 를 A a. Вx В Ь. Ох АВ Ox AB Bx A d. Bx A C. TV Sex Lin ko

5. The gene controlling the human ABO blood group system has three alleles that determine the nature of the antigens on the membranes of red cells. Allele lª codes for the production of antigen A on the surface of red blood cells. Allele IB codes for the production of antigen B on the surface of red blood cells. Allele lº does not code for any antigens on the surface of red blood cells. Alleles IA and IB are co-dominant and both alleles are dominant over lº a. Use this information to determine the possible genotypes, antigens and blood group phenotypes within a population. Genotype Antigen(s) Blood Group Phenotype

10 11012 130 14 150 30 170 19C U 2.EVC syndrome O 3. All of the above QUESTION 5 What is the difference between a phenotype and a genotype? O 1.A phenotype is the set of genes an organism carries, a genotype is the organism's observable characteristics O 2. A phenotype is the organism's observable characteristics, a genotype is the set of genes an organism carries QUESTION 6 On a Punnett Square, which combination shows heterozygous alleles? O 1. BB O 2. bb O 3. Bb Click Save and Submit to save and submit. Click Save All Answers to save all answers. 44°F Mostly c の f1 fi0 fe t9 144 f7 1- fs 10 米 & 6. 8. 3. 4 近 %24