Which of the following would you not find in a pedigree when a male has an X-linked recessive disorder? Select one: O A. The sons of a female with the disorder will all have the disorder O B. Only males in the pedigree have the disorder. C. Only females in the pedigree have the disorder. O D. Neither parent has the disorder.
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- Color blindness is an X-linked trait caused by a recessive alle A carrier female marries a normal male a. How many male offspring can be expected to be color-blind and have a normal vison? b. How many female offspring can be expected to be carriers and to be normal?In humans, having freckled skin (F) is dominant. Assume that a homozygous recessive man and a heterozygous woman have a child. a. What is the woman's phenotype? b. Show the Punnett square for the cross. С. What is the child's probability of having no freckles? UuntHemophilia is an X-linked recessive disorder in humans. If a heterozygouswoman has children with an unaffected man, what are the probabilitiesthat she will have the following combinations of children? A. An affected sonB. Four unaffected offspring in a rowC. An unaffected daughter or sonD. Two out of five offspring that are affected
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- Which of the following is indicated by roman numerals in a pedigree? a.Presence of the studied trait b.Generation c.Sex d.Marriage status Which of the following disorders in humans has an autosomal dominant inheritance pattern? a.Albinism b.Hemophilia c.Tay-Sachs disease d.Huntington’s disease For an X-linked recessive allele, what proportion of female offspring will be carriers in the cross of an affected father and a noncarrying mother? a.50 percent b.0 percent c.100 percentA man who is an achondroplastic dwarf with normal vision marries a color- blind woman of normal height. The man's father was 6 feet tall, and both the woman's parents were of average height. Achondroplastic dwarfism is autosomal dominant, and red-green color blindness is X-linked recessive. What proportion of their sons would be color-blind and of normal height? a. none b. half C. one our of four d. three out of four е. allIs the inheritance pattern indicated by the shaded symbols in this pedigree consistent with the inheritance pattern of an X-linked recessive characteristic? Select one: a. Yes b. No
- Colorblindness is inherited as an X-linked recessive trait while pattern baldness is controlled by an autosomal gene that is dominant in males but recessive in females. A colorblind man who is also homozygous for baldness has children with a woman who carries normal genes for both traits. What is the probability that any of their child will be: a. Colorblind, bald male b. Colorblind, normal-haired male c. Female with normal sight and baldAurora met Prince Phillip at the dance. Both of them are heterozygous for their large eyes, which is dominant over small eyes. Create a Punnett square to show the possibilities that would result if they had children. (use E for dominant and e for recessive) a. List the possible gehotypes and phenotypes for their children. b. What are the chances of a child with small eyes? out of or C. What are the chances of a child with large eyes? out of or 00Tay–Sachs disease is caused by recessive alleles on anautosome. In which case(s) could two parents with anormal phenotype have a child with Tay–Sachs?a. Both parents are homozygous for a Tay–Sachs allele.b. Both parents are heterozygous for a Tay–Sachsallele.c. One parent is homozygous for a Tay–Sachs allele,and the other is heterozygous.