Heredity 3. INCOMPLETE DOMINANCE AND CODOMINANCE × pink flowers. h Indicate the

Question

Heredity 3. INCOMPLETE DOMINANCE AND CODOMINANCE × pink flowers. h Indicate the genotype and phenotype ratios of this cross in ssapdragons: Pink fowers x Genotype ratio Phenotype ratio have a child c. What is the probsbility that parents who are both beteroxygous for sickle-cell hemoglobin wowld with sickle-cell anemia? 4. MULTIPLE ALLELES: ABO BLOOD TYPES a Indicate the expected genotype and phenotype ratios for these matings: 1. 1A1 xii Genotype ratio Phenotype ratio 21A3 Genotype ratio: Phenotype ratio . True/False A type O child may have two type A parents. Atype O child may have one type AB parent. _ A type B child may have two type AB parents. A type AB child may have one type O parent. e. Anm (type A, Rh' blood) is suing Joe (type AB, Rh blood) for child support, claiming that he is the father of her child (ype B, Rh blood). On the basis of blood type, is it possible that Joe is the father? What ABO blood type(s) would Joe have to possess to prove that he is not the father? 5. DIHYBRID CROSSES WITH DOMINANCE a Desermine tdhe phenotype ratio in progeny of a cross between two yellow-round dihybrid pea plants. Parent phenotypes Parent genotypes Gametes Punnett square 132

Explanation / Answer

Incomplete dominance is where there is incomplete expression of paired allele,as a result of which there is a third form of phenotype in heterozygous form ..commonly seen with plant colour.

codominant inheritance is seen with for eg blood group in which AB blood group both A and B are equally expressed.

Sickle cell anemia is a recessive character therefore anemia occurs only in homozygous recessive form ,therefore when we cross two heterozygote then there is only 25percent chance of being affected .

While the rest 50percent are carrier .

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