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- Which of the following does not describe the pedigree analysis ofan autosomal dominant disorder?a. heterozygotes are affectedb. two affected parents will always have affected childrenc. affected children usually have an affected parentd. two unaffected parents will not have affected childrenBy looking at the following table, circle the trait which is sex-influenced. Genotype Male Female BB Bald Bald Bb Bald Non-bald bb Non-bald Non-baldWhat is the assignment is to provide definitions of the following five terms? A. Homozygous genotype (or homozygote) B. Heterozygous genotype (or heterozygote)
- When a trait is only expressed in the presence of two identical alleles, the genotype is a. Heterozygous dominant b. Homozygous dominant c. Homozygous recessive d. Heterozygous recessiveIn a true breeding parental cross for an Autosomal recessive disease trait, the expected proportion of males in the F2 generation that are unaffected is:Which of the following terms is used to describe the offspring of a cross of two true-breeding parents that differ in one or more traits? Pure line Homozygous Reciprocal Hybrid
- In a pedigree, which of the following shapes indicates a male individual? Circle Square DiamondWhen a trait is only expressed in the presence of two identical alleles, the genotype is Select one: a. Heterozygous dominant b. Heterozygous recessive c. Homozygous dominant d. Homozygous recessiveA man is a homozygous for a disease. He marries a woman who is heterozygous for the disease. A son and a daughter were born to them. The daughter has the disease but the son is only a carrier. Their daughter then marries a man who is normal for the disease. Two daughters who both have the disease were born to them. What are their genotypes of all of them? What is the type of inheritance observed?
- What is the probability of a child having a recessive disorder if both parents are heterozygous carriers? A. 1/2 B. 1/4 C. 3/4 D. 2/3 E. ZeroDescribe the differences between an incompletely dominant trait and a codominant trait.In phenotypes with codominant inheritance, the parent trait have ________. blended expression blended expression equal expression equal expression intermediate expression